### Preflight Checklist - [x] I have searched [existing issues](https://github.com/anthropics/claude-code/issues?q=is%3Aissue%20state%3Aopen%20label%3Abug) and this hasn't been reported yet - [x] This is a single bug report (please file separate reports for different bugs) - [x] I am using the latest version of Claude Code ### What's Wrong? On a Win 10 host (ver=> Microsoft Windows [Version 10.0.19045.6466]), I was unable to use the powershell or CMD commands to install Claude Code. The fo

[BUG] Install on Windows10 fails when HOME is not set. EPERM mkdir '\' fails

Resolved 💬 2 comments Opened Mar 7, 2026 by steranka Closed Apr 5, 2026

Preflight Checklist

[x] I have searched existing issues and this hasn't been reported yet
[x] This is a single bug report (please file separate reports for different bugs)
[x] I am using the latest version of Claude Code

What's Wrong?

On a Win 10 host (ver=> Microsoft Windows [Version 10.0.19045.6466]), I was unable to use the powershell or CMD commands to install Claude Code.

The following command failed:
curl -fsSL https://claude.ai/install.cmd -o install.cmd && install.cmd
The actual output for install.cmd when it failed is shown next:

curl -fsSL https://claude.ai/install.cmd -o install.cmd && install.cmd
Setting up Claude Code...
× Installation failed
EPERM: operation not permitted, mkdir '\'
Try running with --force to override checks
Installation failed

I also tried using the powershell command irm https://claude.ai/install.ps1 | iex and it also failed with the same error. Both attempts were run in an ADMIN session/window.
NOTE: I enabled debugging for the install.cmd script so I could see every command executed and found the problem. The command mkdir was using the %HOME% environment variable which was not set in my cmd.exe window nor in my powershell window.

The solution was simple, just define HOME prior to running the installer.

set HOME=%USERPROFILE%
curl -fsSL https://claude.ai/install.cmd -o install.cmd && install.cmd
Setting up Claude Code...
√ Claude Code successfully installed!
  Version: 2.1.71
  Location: C:\Users\user1\.local\bin\claude.exe
  Next: Run claude --help to get started
‼ Setup notes:
  • Native installation exists but C:\Users\user1\.local\bin is not in your PATH. Add it by opening: System
  Properties → Environment Variables → Edit User PATH → New → Add the path above. Then restart your terminal.
Installation complete!

What Should Happen?

Claude code should install without the user needing to set that variable or the documentation should be updated to state that this is needed.

Error Messages/Logs

Below is the debug output of install.cmd running

C:\play\claude-code-install>install.cmd

C:\play\claude-code-install>REM @echo off

C:\play\claude-code-install>setlocal enabledelayedexpansion

C:\play\claude-code-install>REM Claude Code Windows CMD Bootstrap Script

C:\play\claude-code-install>REM Installs Claude Code for environments where PowerShell is not available

C:\play\claude-code-install>REM Parse command line argument

C:\play\claude-code-install>set "TARGET="

C:\play\claude-code-install>if "!TARGET!" == "" set "TARGET=latest"

C:\play\claude-code-install>REM Validate target parameter

C:\play\claude-code-install>if /I "!TARGET!" == "stable" goto :target_valid

C:\play\claude-code-install>if /I "!TARGET!" == "latest" goto :target_valid

C:\play\claude-code-install>REM Check for 64-bit Windows

C:\play\claude-code-install>if /I "AMD64" == "AMD64" goto :arch_valid

C:\play\claude-code-install>REM Set constants

C:\play\claude-code-install>set "GCS_BUCKET=https://storage.googleapis.com/claude-code-dist-86c565f3-f756-42ad-8dfa-d59b1c096819/claude-code-releases"

C:\play\claude-code-install>set "DOWNLOAD_DIR=C:\Users\user1\.claude\downloads"

C:\play\claude-code-install>REM Use native ARM64 binary on ARM64 Windows, x64 otherwise

C:\play\claude-code-install>if /I "AMD64" == "ARM64" (set "PLATFORM=win32-arm64" )  else (set "PLATFORM=win32-x64" )

C:\play\claude-code-install>REM Create download directory

C:\play\claude-code-install>if not exist "!DOWNLOAD_DIR!" mkdir "!DOWNLOAD_DIR!"

C:\play\claude-code-install>REM Check for curl availability

C:\play\claude-code-install>curl --version  1>nul 2>&1

C:\play\claude-code-install>if !ERRORLEVEL! NEQ 0 (
echo curl is required but not available. Please install curl or use PowerShell installer.  1>&2
 exit /b 1
)

C:\play\claude-code-install>REM Always download latest version (which has the most up-to-date installer)

C:\play\claude-code-install>call :download_file "!GCS_BUCKET!/latest" "!DOWNLOAD_DIR!\latest"

C:\play\claude-code-install>REM Downloads a file using curl

C:\play\claude-code-install>REM Args: "https://storage.googleapis.com/claude-code-dist-86c565f3-f756-42ad-8dfa-d59b1c096819/claude-code-releases/latest"=URL, "C:\Users\user1\.claude\downloads\latest"=OutputPath

C:\play\claude-code-install>set "URL=https://storage.googleapis.com/claude-code-dist-86c565f3-f756-42ad-8dfa-d59b1c096819/claude-code-releases/latest"

C:\play\claude-code-install>set "OUTPUT=C:\Users\user1\.claude\downloads\latest"

C:\play\claude-code-install>curl -fsSL "!URL!" -o "!OUTPUT!"

C:\play\claude-code-install>exit /b !ERRORLEVEL!

C:\play\claude-code-install>if !ERRORLEVEL! NEQ 0 (
echo Failed to get latest version  1>&2
 exit /b 1
)

C:\play\claude-code-install>REM Read version from file

C:\play\claude-code-install>set /p VERSION= 0<"!DOWNLOAD_DIR!\latest"

C:\play\claude-code-install>del "!DOWNLOAD_DIR!\latest"

C:\play\claude-code-install>REM Download manifest

C:\play\claude-code-install>call :download_file "!GCS_BUCKET!/!VERSION!/manifest.json" "!DOWNLOAD_DIR!\manifest.json"

C:\play\claude-code-install>REM Downloads a file using curl

C:\play\claude-code-install>REM Args: "https://storage.googleapis.com/claude-code-dist-86c565f3-f756-42ad-8dfa-d59b1c096819/claude-code-releases/2.1.71/manifest.json"=URL, "C:\Users\user1\.claude\downloads\manifest.json"=OutputPath

C:\play\claude-code-install>set "URL=https://storage.googleapis.com/claude-code-dist-86c565f3-f756-42ad-8dfa-d59b1c096819/claude-code-releases/2.1.71/manifest.json"

C:\play\claude-code-install>set "OUTPUT=C:\Users\user1\.claude\downloads\manifest.json"

C:\play\claude-code-install>curl -fsSL "!URL!" -o "!OUTPUT!"

C:\play\claude-code-install>exit /b !ERRORLEVEL!

C:\play\claude-code-install>if !ERRORLEVEL! NEQ 0 (
echo Failed to get manifest  1>&2
 exit /b 1
)

C:\play\claude-code-install>REM Extract checksum from manifest

C:\play\claude-code-install>call :parse_manifest "!DOWNLOAD_DIR!\manifest.json" "!PLATFORM!"

C:\play\claude-code-install>REM Parse JSON manifest to extract checksum for platform

C:\play\claude-code-install>REM Args: "C:\Users\user1\.claude\downloads\manifest.json"=ManifestPath, "win32-x64"=Platform

C:\play\claude-code-install>set "MANIFEST_PATH=C:\Users\user1\.claude\downloads\manifest.json"

C:\play\claude-code-install>set "PLATFORM_NAME=win32-x64"

C:\play\claude-code-install>set "EXPECTED_CHECKSUM="

C:\play\claude-code-install>REM Use findstr to find platform section, then look for checksum

C:\play\claude-code-install>set "FOUND_PLATFORM="

C:\play\claude-code-install>set "IN_PLATFORM_SECTION="

C:\play\claude-code-install>REM Read the manifest line by line

C:\play\claude-code-install>for /F "usebackq tokens=*" %i in ("!MANIFEST_PATH!") do (
set "LINE=%i"
 REM Check if this line contains our platform
 echo !LINE!   | findstr /c:"\"win32-x64\":"  1>nul
 if !ERRORLEVEL! EQU 0 (set "IN_PLATFORM_SECTION=1" )
 REM If we're in the platform section, look for checksum
 if defined IN_PLATFORM_SECTION (
echo !LINE!   | findstr /c:"\"checksum\":"  1>nul
 if !ERRORLEVEL! EQU 0 (
REM Extract checksum value
 for /F "tokens=2 delims=:" %j in ("!LINE!") do (
set "CHECKSUM_PART=%j"
 REM Remove quotes, whitespace, and comma
 set "CHECKSUM_PART=!CHECKSUM_PART: =!"
 set "CHECKSUM_PART=!CHECKSUM_PART:"=!"
 set "CHECKSUM_PART=!CHECKSUM_PART:,=!"
 REM Check if it looks like a SHA256 (64 hex chars)
 if not "!CHECKSUM_PART!" == "" (
call :check_length "!CHECKSUM_PART!" 64
 if !ERRORLEVEL! EQU 0 (
set "EXPECTED_CHECKSUM=!CHECKSUM_PART!"
 exit /b 0
)
)
)
)
 REM Check if we've left the platform section (closing brace)
 echo !LINE!   | findstr /c:"}"  1>nul
 if !ERRORLEVEL! EQU 0 set "IN_PLATFORM_SECTION="
)
)

C:\play\claude-code-install>(
set "LINE={"
 REM Check if this line contains our platform
 echo !LINE!   | findstr /c:"\"win32-x64\":"  1>nul
 if !ERRORLEVEL! EQU 0 (set "IN_PLATFORM_SECTION=1" )
 REM If we're in the platform section, look for checksum
 if defined IN_PLATFORM_SECTION (
echo !LINE!   | findstr /c:"\"checksum\":"  1>nul
 if !ERRORLEVEL! EQU 0 (
REM Extract checksum value
 for /F "tokens=2 delims=:" %j in ("!LINE!") do (
set "CHECKSUM_PART=%j"
 REM Remove quotes, whitespace, and comma
 set "CHECKSUM_PART=!CHECKSUM_PART: =!"
 set "CHECKSUM_PART=!CHECKSUM_PART:"=!"
 set "CHECKSUM_PART=!CHECKSUM_PART:,=!"
 REM Check if it looks like a SHA256 (64 hex chars)
 if not "!CHECKSUM_PART!" == "" (
call :check_length "!CHECKSUM_PART!" 64
 if !ERRORLEVEL! EQU 0 (
set "EXPECTED_CHECKSUM=!CHECKSUM_PART!"
 exit /b 0
)
)
)
)
 REM Check if we've left the platform section (closing brace)
 echo !LINE!   | findstr /c:"}"  1>nul
 if !ERRORLEVEL! EQU 0 set "IN_PLATFORM_SECTION="
)
)

C:\play\claude-code-install>(
set "LINE="version": "2.1.71","
 REM Check if this line contains our platform
 echo !LINE!   | findstr /c:"\"win32-x64\":"  1>nul
 if !ERRORLEVEL! EQU 0 (set "IN_PLATFORM_SECTION=1" )
 REM If we're in the platform section, look for checksum
 if defined IN_PLATFORM_SECTION (
echo !LINE!   | findstr /c:"\"checksum\":"  1>nul
 if !ERRORLEVEL! EQU 0 (
REM Extract checksum value
 for /F "tokens=2 delims=:" %j in ("!LINE!") do (
set "CHECKSUM_PART=%j"
 REM Remove quotes, whitespace, and comma
 set "CHECKSUM_PART=!CHECKSUM_PART: =!"
 set "CHECKSUM_PART=!CHECKSUM_PART:"=!"
 set "CHECKSUM_PART=!CHECKSUM_PART:,=!"
 REM Check if it looks like a SHA256 (64 hex chars)
 if not "!CHECKSUM_PART!" == "" (
call :check_length "!CHECKSUM_PART!" 64
 if !ERRORLEVEL! EQU 0 (
set "EXPECTED_CHECKSUM=!CHECKSUM_PART!"
 exit /b 0
)
)
)
)
 REM Check if we've left the platform section (closing brace)
 echo !LINE!   | findstr /c:"}"  1>nul
 if !ERRORLEVEL! EQU 0 set "IN_PLATFORM_SECTION="
)
)

C:\play\claude-code-install>(
set "LINE="buildDate": "2026-03-06T22:51:07Z","
 REM Check if this line contains our platform
 echo !LINE!   | findstr /c:"\"win32-x64\":"  1>nul
 if !ERRORLEVEL! EQU 0 (set "IN_PLATFORM_SECTION=1" )
 REM If we're in the platform section, look for checksum
 if defined IN_PLATFORM_SECTION (
echo !LINE!   | findstr /c:"\"checksum\":"  1>nul
 if !ERRORLEVEL! EQU 0 (
REM Extract checksum value
 for /F "tokens=2 delims=:" %j in ("!LINE!") do (
set "CHECKSUM_PART=%j"
 REM Remove quotes, whitespace, and comma
 set "CHECKSUM_PART=!CHECKSUM_PART: =!"
 set "CHECKSUM_PART=!CHECKSUM_PART:"=!"
 set "CHECKSUM_PART=!CHECKSUM_PART:,=!"
 REM Check if it looks like a SHA256 (64 hex chars)
 if not "!CHECKSUM_PART!" == "" (
call :check_length "!CHECKSUM_PART!" 64
 if !ERRORLEVEL! EQU 0 (
set "EXPECTED_CHECKSUM=!CHECKSUM_PART!"
 exit /b 0
)
)
)
)
 REM Check if we've left the platform section (closing brace)
 echo !LINE!   | findstr /c:"}"  1>nul
 if !ERRORLEVEL! EQU 0 set "IN_PLATFORM_SECTION="
)
)

C:\play\claude-code-install>(
set "LINE="platforms": {"
 REM Check if this line contains our platform
 echo !LINE!   | findstr /c:"\"win32-x64\":"  1>nul
 if !ERRORLEVEL! EQU 0 (set "IN_PLATFORM_SECTION=1" )
 REM If we're in the platform section, look for checksum
 if defined IN_PLATFORM_SECTION (
echo !LINE!   | findstr /c:"\"checksum\":"  1>nul
 if !ERRORLEVEL! EQU 0 (
REM Extract checksum value
 for /F "tokens=2 delims=:" %j in ("!LINE!") do (
set "CHECKSUM_PART=%j"
 REM Remove quotes, whitespace, and comma
 set "CHECKSUM_PART=!CHECKSUM_PART: =!"
 set "CHECKSUM_PART=!CHECKSUM_PART:"=!"
 set "CHECKSUM_PART=!CHECKSUM_PART:,=!"
 REM Check if it looks like a SHA256 (64 hex chars)
 if not "!CHECKSUM_PART!" == "" (
call :check_length "!CHECKSUM_PART!" 64
 if !ERRORLEVEL! EQU 0 (
set "EXPECTED_CHECKSUM=!CHECKSUM_PART!"
 exit /b 0
)
)
)
)
 REM Check if we've left the platform section (closing brace)
 echo !LINE!   | findstr /c:"}"  1>nul
 if !ERRORLEVEL! EQU 0 set "IN_PLATFORM_SECTION="
)
)

C:\play\claude-code-install>(
set "LINE="darwin-arm64": {"
 REM Check if this line contains our platform
 echo !LINE!   | findstr /c:"\"win32-x64\":"  1>nul
 if !ERRORLEVEL! EQU 0 (set "IN_PLATFORM_SECTION=1" )
 REM If we're in the platform section, look for checksum
 if defined IN_PLATFORM_SECTION (
echo !LINE!   | findstr /c:"\"checksum\":"  1>nul
 if !ERRORLEVEL! EQU 0 (
REM Extract checksum value
 for /F "tokens=2 delims=:" %j in ("!LINE!") do (
set "CHECKSUM_PART=%j"
 REM Remove quotes, whitespace, and comma
 set "CHECKSUM_PART=!CHECKSUM_PART: =!"
 set "CHECKSUM_PART=!CHECKSUM_PART:"=!"
 set "CHECKSUM_PART=!CHECKSUM_PART:,=!"
 REM Check if it looks like a SHA256 (64 hex chars)
 if not "!CHECKSUM_PART!" == "" (
call :check_length "!CHECKSUM_PART!" 64
 if !ERRORLEVEL! EQU 0 (
set "EXPECTED_CHECKSUM=!CHECKSUM_PART!"
 exit /b 0
)
)
)
)
 REM Check if we've left the platform section (closing brace)
 echo !LINE!   | findstr /c:"}"  1>nul
 if !ERRORLEVEL! EQU 0 set "IN_PLATFORM_SECTION="
)
)

C:\play\claude-code-install>(
set "LINE="binary": "claude","
 REM Check if this line contains our platform
 echo !LINE!   | findstr /c:"\"win32-x64\":"  1>nul
 if !ERRORLEVEL! EQU 0 (set "IN_PLATFORM_SECTION=1" )
 REM If we're in the platform section, look for checksum
 if defined IN_PLATFORM_SECTION (
echo !LINE!   | findstr /c:"\"checksum\":"  1>nul
 if !ERRORLEVEL! EQU 0 (
REM Extract checksum value
 for /F "tokens=2 delims=:" %j in ("!LINE!") do (
set "CHECKSUM_PART=%j"
 REM Remove quotes, whitespace, and comma
 set "CHECKSUM_PART=!CHECKSUM_PART: =!"
 set "CHECKSUM_PART=!CHECKSUM_PART:"=!"
 set "CHECKSUM_PART=!CHECKSUM_PART:,=!"
 REM Check if it looks like a SHA256 (64 hex chars)
 if not "!CHECKSUM_PART!" == "" (
call :check_length "!CHECKSUM_PART!" 64
 if !ERRORLEVEL! EQU 0 (
set "EXPECTED_CHECKSUM=!CHECKSUM_PART!"
 exit /b 0
)
)
)
)
 REM Check if we've left the platform section (closing brace)
 echo !LINE!   | findstr /c:"}"  1>nul
 if !ERRORLEVEL! EQU 0 set "IN_PLATFORM_SECTION="
)
)

C:\play\claude-code-install>(
set "LINE="checksum": "f3d8129ec7ddaf158c10e193df546421499d69b7f44ec2f0b67c3fe54f601cb9","
 REM Check if this line contains our platform
 echo !LINE!   | findstr /c:"\"win32-x64\":"  1>nul
 if !ERRORLEVEL! EQU 0 (set "IN_PLATFORM_SECTION=1" )
 REM If we're in the platform section, look for checksum
 if defined IN_PLATFORM_SECTION (
echo !LINE!   | findstr /c:"\"checksum\":"  1>nul
 if !ERRORLEVEL! EQU 0 (
REM Extract checksum value
 for /F "tokens=2 delims=:" %j in ("!LINE!") do (
set "CHECKSUM_PART=%j"
 REM Remove quotes, whitespace, and comma
 set "CHECKSUM_PART=!CHECKSUM_PART: =!"
 set "CHECKSUM_PART=!CHECKSUM_PART:"=!"
 set "CHECKSUM_PART=!CHECKSUM_PART:,=!"
 REM Check if it looks like a SHA256 (64 hex chars)
 if not "!CHECKSUM_PART!" == "" (
call :check_length "!CHECKSUM_PART!" 64
 if !ERRORLEVEL! EQU 0 (
set "EXPECTED_CHECKSUM=!CHECKSUM_PART!"
 exit /b 0
)
)
)
)
 REM Check if we've left the platform section (closing brace)
 echo !LINE!   | findstr /c:"}"  1>nul
 if !ERRORLEVEL! EQU 0 set "IN_PLATFORM_SECTION="
)
)

C:\play\claude-code-install>(
set "LINE="size": 192377712"
 REM Check if this line contains our platform
 echo !LINE!   | findstr /c:"\"win32-x64\":"  1>nul
 if !ERRORLEVEL! EQU 0 (set "IN_PLATFORM_SECTION=1" )
 REM If we're in the platform section, look for checksum
 if defined IN_PLATFORM_SECTION (
echo !LINE!   | findstr /c:"\"checksum\":"  1>nul
 if !ERRORLEVEL! EQU 0 (
REM Extract checksum value
 for /F "tokens=2 delims=:" %j in ("!LINE!") do (
set "CHECKSUM_PART=%j"
 REM Remove quotes, whitespace, and comma
 set "CHECKSUM_PART=!CHECKSUM_PART: =!"
 set "CHECKSUM_PART=!CHECKSUM_PART:"=!"
 set "CHECKSUM_PART=!CHECKSUM_PART:,=!"
 REM Check if it looks like a SHA256 (64 hex chars)
 if not "!CHECKSUM_PART!" == "" (
call :check_length "!CHECKSUM_PART!" 64
 if !ERRORLEVEL! EQU 0 (
set "EXPECTED_CHECKSUM=!CHECKSUM_PART!"
 exit /b 0
)
)
)
)
 REM Check if we've left the platform section (closing brace)
 echo !LINE!   | findstr /c:"}"  1>nul
 if !ERRORLEVEL! EQU 0 set "IN_PLATFORM_SECTION="
)
)

C:\play\claude-code-install>(
set "LINE=},"
 REM Check if this line contains our platform
 echo !LINE!   | findstr /c:"\"win32-x64\":"  1>nul
 if !ERRORLEVEL! EQU 0 (set "IN_PLATFORM_SECTION=1" )
 REM If we're in the platform section, look for checksum
 if defined IN_PLATFORM_SECTION (
echo !LINE!   | findstr /c:"\"checksum\":"  1>nul
 if !ERRORLEVEL! EQU 0 (
REM Extract checksum value
 for /F "tokens=2 delims=:" %j in ("!LINE!") do (
set "CHECKSUM_PART=%j"
 REM Remove quotes, whitespace, and comma
 set "CHECKSUM_PART=!CHECKSUM_PART: =!"
 set "CHECKSUM_PART=!CHECKSUM_PART:"=!"
 set "CHECKSUM_PART=!CHECKSUM_PART:,=!"
 REM Check if it looks like a SHA256 (64 hex chars)
 if not "!CHECKSUM_PART!" == "" (
call :check_length "!CHECKSUM_PART!" 64
 if !ERRORLEVEL! EQU 0 (
set "EXPECTED_CHECKSUM=!CHECKSUM_PART!"
 exit /b 0
)
)
)
)
 REM Check if we've left the platform section (closing brace)
 echo !LINE!   | findstr /c:"}"  1>nul
 if !ERRORLEVEL! EQU 0 set "IN_PLATFORM_SECTION="
)
)

C:\play\claude-code-install>(
set "LINE="darwin-x64": {"
 REM Check if this line contains our platform
 echo !LINE!   | findstr /c:"\"win32-x64\":"  1>nul
 if !ERRORLEVEL! EQU 0 (set "IN_PLATFORM_SECTION=1" )
 REM If we're in the platform section, look for checksum
 if defined IN_PLATFORM_SECTION (
echo !LINE!   | findstr /c:"\"checksum\":"  1>nul
 if !ERRORLEVEL! EQU 0 (
REM Extract checksum value
 for /F "tokens=2 delims=:" %j in ("!LINE!") do (
set "CHECKSUM_PART=%j"
 REM Remove quotes, whitespace, and comma
 set "CHECKSUM_PART=!CHECKSUM_PART: =!"
 set "CHECKSUM_PART=!CHECKSUM_PART:"=!"
 set "CHECKSUM_PART=!CHECKSUM_PART:,=!"
 REM Check if it looks like a SHA256 (64 hex chars)
 if not "!CHECKSUM_PART!" == "" (
call :check_length "!CHECKSUM_PART!" 64
 if !ERRORLEVEL! EQU 0 (
set "EXPECTED_CHECKSUM=!CHECKSUM_PART!"
 exit /b 0
)
)
)
)
 REM Check if we've left the platform section (closing brace)
 echo !LINE!   | findstr /c:"}"  1>nul
 if !ERRORLEVEL! EQU 0 set "IN_PLATFORM_SECTION="
)
)

C:\play\claude-code-install>(
set "LINE="binary": "claude","
 REM Check if this line contains our platform
 echo !LINE!   | findstr /c:"\"win32-x64\":"  1>nul
 if !ERRORLEVEL! EQU 0 (set "IN_PLATFORM_SECTION=1" )
 REM If we're in the platform section, look for checksum
 if defined IN_PLATFORM_SECTION (
echo !LINE!   | findstr /c:"\"checksum\":"  1>nul
 if !ERRORLEVEL! EQU 0 (
REM Extract checksum value
 for /F "tokens=2 delims=:" %j in ("!LINE!") do (
set "CHECKSUM_PART=%j"
 REM Remove quotes, whitespace, and comma
 set "CHECKSUM_PART=!CHECKSUM_PART: =!"
 set "CHECKSUM_PART=!CHECKSUM_PART:"=!"
 set "CHECKSUM_PART=!CHECKSUM_PART:,=!"
 REM Check if it looks like a SHA256 (64 hex chars)
 if not "!CHECKSUM_PART!" == "" (
call :check_length "!CHECKSUM_PART!" 64
 if !ERRORLEVEL! EQU 0 (
set "EXPECTED_CHECKSUM=!CHECKSUM_PART!"
 exit /b 0
)
)
)
)
 REM Check if we've left the platform section (closing brace)
 echo !LINE!   | findstr /c:"}"  1>nul
 if !ERRORLEVEL! EQU 0 set "IN_PLATFORM_SECTION="
)
)

C:\play\claude-code-install>(
set "LINE="checksum": "a8ff210022860b1567d35fba5822d9be4a74c422962e2e32c39f4116796d57c8","
 REM Check if this line contains our platform
 echo !LINE!   | findstr /c:"\"win32-x64\":"  1>nul
 if !ERRORLEVEL! EQU 0 (set "IN_PLATFORM_SECTION=1" )
 REM If we're in the platform section, look for checksum
 if defined IN_PLATFORM_SECTION (
echo !LINE!   | findstr /c:"\"checksum\":"  1>nul
 if !ERRORLEVEL! EQU 0 (
REM Extract checksum value
 for /F "tokens=2 delims=:" %j in ("!LINE!") do (
set "CHECKSUM_PART=%j"
 REM Remove quotes, whitespace, and comma
 set "CHECKSUM_PART=!CHECKSUM_PART: =!"
 set "CHECKSUM_PART=!CHECKSUM_PART:"=!"
 set "CHECKSUM_PART=!CHECKSUM_PART:,=!"
 REM Check if it looks like a SHA256 (64 hex chars)
 if not "!CHECKSUM_PART!" == "" (
call :check_length "!CHECKSUM_PART!" 64
 if !ERRORLEVEL! EQU 0 (
set "EXPECTED_CHECKSUM=!CHECKSUM_PART!"
 exit /b 0
)
)
)
)
 REM Check if we've left the platform section (closing brace)
 echo !LINE!   | findstr /c:"}"  1>nul
 if !ERRORLEVEL! EQU 0 set "IN_PLATFORM_SECTION="
)
)

C:\play\claude-code-install>(
set "LINE="size": 198519888"
 REM Check if this line contains our platform
 echo !LINE!   | findstr /c:"\"win32-x64\":"  1>nul
 if !ERRORLEVEL! EQU 0 (set "IN_PLATFORM_SECTION=1" )
 REM If we're in the platform section, look for checksum
 if defined IN_PLATFORM_SECTION (
echo !LINE!   | findstr /c:"\"checksum\":"  1>nul
 if !ERRORLEVEL! EQU 0 (
REM Extract checksum value
 for /F "tokens=2 delims=:" %j in ("!LINE!") do (
set "CHECKSUM_PART=%j"
 REM Remove quotes, whitespace, and comma
 set "CHECKSUM_PART=!CHECKSUM_PART: =!"
 set "CHECKSUM_PART=!CHECKSUM_PART:"=!"
 set "CHECKSUM_PART=!CHECKSUM_PART:,=!"
 REM Check if it looks like a SHA256 (64 hex chars)
 if not "!CHECKSUM_PART!" == "" (
call :check_length "!CHECKSUM_PART!" 64
 if !ERRORLEVEL! EQU 0 (
set "EXPECTED_CHECKSUM=!CHECKSUM_PART!"
 exit /b 0
)
)
)
)
 REM Check if we've left the platform section (closing brace)
 echo !LINE!   | findstr /c:"}"  1>nul
 if !ERRORLEVEL! EQU 0 set "IN_PLATFORM_SECTION="
)
)

C:\play\claude-code-install>(
set "LINE=},"
 REM Check if this line contains our platform
 echo !LINE!   | findstr /c:"\"win32-x64\":"  1>nul
 if !ERRORLEVEL! EQU 0 (set "IN_PLATFORM_SECTION=1" )
 REM If we're in the platform section, look for checksum
 if defined IN_PLATFORM_SECTION (
echo !LINE!   | findstr /c:"\"checksum\":"  1>nul
 if !ERRORLEVEL! EQU 0 (
REM Extract checksum value
 for /F "tokens=2 delims=:" %j in ("!LINE!") do (
set "CHECKSUM_PART=%j"
 REM Remove quotes, whitespace, and comma
 set "CHECKSUM_PART=!CHECKSUM_PART: =!"
 set "CHECKSUM_PART=!CHECKSUM_PART:"=!"
 set "CHECKSUM_PART=!CHECKSUM_PART:,=!"
 REM Check if it looks like a SHA256 (64 hex chars)
 if not "!CHECKSUM_PART!" == "" (
call :check_length "!CHECKSUM_PART!" 64
 if !ERRORLEVEL! EQU 0 (
set "EXPECTED_CHECKSUM=!CHECKSUM_PART!"
 exit /b 0
)
)
)
)
 REM Check if we've left the platform section (closing brace)
 echo !LINE!   | findstr /c:"}"  1>nul
 if !ERRORLEVEL! EQU 0 set "IN_PLATFORM_SECTION="
)
)

C:\play\claude-code-install>(
set "LINE="linux-arm64": {"
 REM Check if this line contains our platform
 echo !LINE!   | findstr /c:"\"win32-x64\":"  1>nul
 if !ERRORLEVEL! EQU 0 (set "IN_PLATFORM_SECTION=1" )
 REM If we're in the platform section, look for checksum
 if defined IN_PLATFORM_SECTION (
echo !LINE!   | findstr /c:"\"checksum\":"  1>nul
 if !ERRORLEVEL! EQU 0 (
REM Extract checksum value
 for /F "tokens=2 delims=:" %j in ("!LINE!") do (
set "CHECKSUM_PART=%j"
 REM Remove quotes, whitespace, and comma
 set "CHECKSUM_PART=!CHECKSUM_PART: =!"
 set "CHECKSUM_PART=!CHECKSUM_PART:"=!"
 set "CHECKSUM_PART=!CHECKSUM_PART:,=!"
 REM Check if it looks like a SHA256 (64 hex chars)
 if not "!CHECKSUM_PART!" == "" (
call :check_length "!CHECKSUM_PART!" 64
 if !ERRORLEVEL! EQU 0 (
set "EXPECTED_CHECKSUM=!CHECKSUM_PART!"
 exit /b 0
)
)
)
)
 REM Check if we've left the platform section (closing brace)
 echo !LINE!   | findstr /c:"}"  1>nul
 if !ERRORLEVEL! EQU 0 set "IN_PLATFORM_SECTION="
)
)

C:\play\claude-code-install>(
set "LINE="binary": "claude","
 REM Check if this line contains our platform
 echo !LINE!   | findstr /c:"\"win32-x64\":"  1>nul
 if !ERRORLEVEL! EQU 0 (set "IN_PLATFORM_SECTION=1" )
 REM If we're in the platform section, look for checksum
 if defined IN_PLATFORM_SECTION (
echo !LINE!   | findstr /c:"\"checksum\":"  1>nul
 if !ERRORLEVEL! EQU 0 (
REM Extract checksum value
 for /F "tokens=2 delims=:" %j in ("!LINE!") do (
set "CHECKSUM_PART=%j"
 REM Remove quotes, whitespace, and comma
 set "CHECKSUM_PART=!CHECKSUM_PART: =!"
 set "CHECKSUM_PART=!CHECKSUM_PART:"=!"
 set "CHECKSUM_PART=!CHECKSUM_PART:,=!"
 REM Check if it looks like a SHA256 (64 hex chars)
 if not "!CHECKSUM_PART!" == "" (
call :check_length "!CHECKSUM_PART!" 64
 if !ERRORLEVEL! EQU 0 (
set "EXPECTED_CHECKSUM=!CHECKSUM_PART!"
 exit /b 0
)
)
)
)
 REM Check if we've left the platform section (closing brace)
 echo !LINE!   | findstr /c:"}"  1>nul
 if !ERRORLEVEL! EQU 0 set "IN_PLATFORM_SECTION="
)
)

C:\play\claude-code-install>(
set "LINE="checksum": "ae26e4a5654238f0a684d5fd9a6bf592321b06eb88ea834343b275f310e39bea","
 REM Check if this line contains our platform
 echo !LINE!   | findstr /c:"\"win32-x64\":"  1>nul
 if !ERRORLEVEL! EQU 0 (set "IN_PLATFORM_SECTION=1" )
 REM If we're in the platform section, look for checksum
 if defined IN_PLATFORM_SECTION (
echo !LINE!   | findstr /c:"\"checksum\":"  1>nul
 if !ERRORLEVEL! EQU 0 (
REM Extract checksum value
 for /F "tokens=2 delims=:" %j in ("!LINE!") do (
set "CHECKSUM_PART=%j"
 REM Remove quotes, whitespace, and comma
 set "CHECKSUM_PART=!CHECKSUM_PART: =!"
 set "CHECKSUM_PART=!CHECKSUM_PART:"=!"
 set "CHECKSUM_PART=!CHECKSUM_PART:,=!"
 REM Check if it looks like a SHA256 (64 hex chars)
 if not "!CHECKSUM_PART!" == "" (
call :check_length "!CHECKSUM_PART!" 64
 if !ERRORLEVEL! EQU 0 (
set "EXPECTED_CHECKSUM=!CHECKSUM_PART!"
 exit /b 0
)
)
)
)
 REM Check if we've left the platform section (closing brace)
 echo !LINE!   | findstr /c:"}"  1>nul
 if !ERRORLEVEL! EQU 0 set "IN_PLATFORM_SECTION="
)
)

C:\play\claude-code-install>(
set "LINE="size": 234383757"
 REM Check if this line contains our platform
 echo !LINE!   | findstr /c:"\"win32-x64\":"  1>nul
 if !ERRORLEVEL! EQU 0 (set "IN_PLATFORM_SECTION=1" )
 REM If we're in the platform section, look for checksum
 if defined IN_PLATFORM_SECTION (
echo !LINE!   | findstr /c:"\"checksum\":"  1>nul
 if !ERRORLEVEL! EQU 0 (
REM Extract checksum value
 for /F "tokens=2 delims=:" %j in ("!LINE!") do (
set "CHECKSUM_PART=%j"
 REM Remove quotes, whitespace, and comma
 set "CHECKSUM_PART=!CHECKSUM_PART: =!"
 set "CHECKSUM_PART=!CHECKSUM_PART:"=!"
 set "CHECKSUM_PART=!CHECKSUM_PART:,=!"
 REM Check if it looks like a SHA256 (64 hex chars)
 if not "!CHECKSUM_PART!" == "" (
call :check_length "!CHECKSUM_PART!" 64
 if !ERRORLEVEL! EQU 0 (
set "EXPECTED_CHECKSUM=!CHECKSUM_PART!"
 exit /b 0
)
)
)
)
 REM Check if we've left the platform section (closing brace)
 echo !LINE!   | findstr /c:"}"  1>nul
 if !ERRORLEVEL! EQU 0 set "IN_PLATFORM_SECTION="
)
)

C:\play\claude-code-install>(
set "LINE=},"
 REM Check if this line contains our platform
 echo !LINE!   | findstr /c:"\"win32-x64\":"  1>nul
 if !ERRORLEVEL! EQU 0 (set "IN_PLATFORM_SECTION=1" )
 REM If we're in the platform section, look for checksum
 if defined IN_PLATFORM_SECTION (
echo !LINE!   | findstr /c:"\"checksum\":"  1>nul
 if !ERRORLEVEL! EQU 0 (
REM Extract checksum value
 for /F "tokens=2 delims=:" %j in ("!LINE!") do (
set "CHECKSUM_PART=%j"
 REM Remove quotes, whitespace, and comma
 set "CHECKSUM_PART=!CHECKSUM_PART: =!"
 set "CHECKSUM_PART=!CHECKSUM_PART:"=!"
 set "CHECKSUM_PART=!CHECKSUM_PART:,=!"
 REM Check if it looks like a SHA256 (64 hex chars)
 if not "!CHECKSUM_PART!" == "" (
call :check_length "!CHECKSUM_PART!" 64
 if !ERRORLEVEL! EQU 0 (
set "EXPECTED_CHECKSUM=!CHECKSUM_PART!"
 exit /b 0
)
)
)
)
 REM Check if we've left the platform section (closing brace)
 echo !LINE!   | findstr /c:"}"  1>nul
 if !ERRORLEVEL! EQU 0 set "IN_PLATFORM_SECTION="
)
)

C:\play\claude-code-install>(
set "LINE="linux-x64": {"
 REM Check if this line contains our platform
 echo !LINE!   | findstr /c:"\"win32-x64\":"  1>nul
 if !ERRORLEVEL! EQU 0 (set "IN_PLATFORM_SECTION=1" )
 REM If we're in the platform section, look for checksum
 if defined IN_PLATFORM_SECTION (
echo !LINE!   | findstr /c:"\"checksum\":"  1>nul
 if !ERRORLEVEL! EQU 0 (
REM Extract checksum value
 for /F "tokens=2 delims=:" %j in ("!LINE!") do (
set "CHECKSUM_PART=%j"
 REM Remove quotes, whitespace, and comma
 set "CHECKSUM_PART=!CHECKSUM_PART: =!"
 set "CHECKSUM_PART=!CHECKSUM_PART:"=!"
 set "CHECKSUM_PART=!CHECKSUM_PART:,=!"
 REM Check if it looks like a SHA256 (64 hex chars)
 if not "!CHECKSUM_PART!" == "" (
call :check_length "!CHECKSUM_PART!" 64
 if !ERRORLEVEL! EQU 0 (
set "EXPECTED_CHECKSUM=!CHECKSUM_PART!"
 exit /b 0
)
)
)
)
 REM Check if we've left the platform section (closing brace)
 echo !LINE!   | findstr /c:"}"  1>nul
 if !ERRORLEVEL! EQU 0 set "IN_PLATFORM_SECTION="
)
)

C:\play\claude-code-install>(
set "LINE="binary": "claude","
 REM Check if this line contains our platform
 echo !LINE!   | findstr /c:"\"win32-x64\":"  1>nul
 if !ERRORLEVEL! EQU 0 (set "IN_PLATFORM_SECTION=1" )
 REM If we're in the platform section, look for checksum
 if defined IN_PLATFORM_SECTION (
echo !LINE!   | findstr /c:"\"checksum\":"  1>nul
 if !ERRORLEVEL! EQU 0 (
REM Extract checksum value
 for /F "tokens=2 delims=:" %j in ("!LINE!") do (
set "CHECKSUM_PART=%j"
 REM Remove quotes, whitespace, and comma
 set "CHECKSUM_PART=!CHECKSUM_PART: =!"
 set "CHECKSUM_PART=!CHECKSUM_PART:"=!"
 set "CHECKSUM_PART=!CHECKSUM_PART:,=!"
 REM Check if it looks like a SHA256 (64 hex chars)
 if not "!CHECKSUM_PART!" == "" (
call :check_length "!CHECKSUM_PART!" 64
 if !ERRORLEVEL! EQU 0 (
set "EXPECTED_CHECKSUM=!CHECKSUM_PART!"
 exit /b 0
)
)
)
)
 REM Check if we've left the platform section (closing brace)
 echo !LINE!   | findstr /c:"}"  1>nul
 if !ERRORLEVEL! EQU 0 set "IN_PLATFORM_SECTION="
)
)

C:\play\claude-code-install>(
set "LINE="checksum": "61002e5f5c4190e9a775bd9cf90e57fff3f0379fb2c8edc653ac0942a347babd","
 REM Check if this line contains our platform
 echo !LINE!   | findstr /c:"\"win32-x64\":"  1>nul
 if !ERRORLEVEL! EQU 0 (set "IN_PLATFORM_SECTION=1" )
 REM If we're in the platform section, look for checksum
 if defined IN_PLATFORM_SECTION (
echo !LINE!   | findstr /c:"\"checksum\":"  1>nul
 if !ERRORLEVEL! EQU 0 (
REM Extract checksum value
 for /F "tokens=2 delims=:" %j in ("!LINE!") do (
set "CHECKSUM_PART=%j"
 REM Remove quotes, whitespace, and comma
 set "CHECKSUM_PART=!CHECKSUM_PART: =!"
 set "CHECKSUM_PART=!CHECKSUM_PART:"=!"
 set "CHECKSUM_PART=!CHECKSUM_PART:,=!"
 REM Check if it looks like a SHA256 (64 hex chars)
 if not "!CHECKSUM_PART!" == "" (
call :check_length "!CHECKSUM_PART!" 64
 if !ERRORLEVEL! EQU 0 (
set "EXPECTED_CHECKSUM=!CHECKSUM_PART!"
 exit /b 0
)
)
)
)
 REM Check if we've left the platform section (closing brace)
 echo !LINE!   | findstr /c:"}"  1>nul
 if !ERRORLEVEL! EQU 0 set "IN_PLATFORM_SECTION="
)
)

C:\play\claude-code-install>(
set "LINE="size": 237119954"
 REM Check if this line contains our platform
 echo !LINE!   | findstr /c:"\"win32-x64\":"  1>nul
 if !ERRORLEVEL! EQU 0 (set "IN_PLATFORM_SECTION=1" )
 REM If we're in the platform section, look for checksum
 if defined IN_PLATFORM_SECTION (
echo !LINE!   | findstr /c:"\"checksum\":"  1>nul
 if !ERRORLEVEL! EQU 0 (
REM Extract checksum value
 for /F "tokens=2 delims=:" %j in ("!LINE!") do (
set "CHECKSUM_PART=%j"
 REM Remove quotes, whitespace, and comma
 set "CHECKSUM_PART=!CHECKSUM_PART: =!"
 set "CHECKSUM_PART=!CHECKSUM_PART:"=!"
 set "CHECKSUM_PART=!CHECKSUM_PART:,=!"
 REM Check if it looks like a SHA256 (64 hex chars)
 if not "!CHECKSUM_PART!" == "" (
call :check_length "!CHECKSUM_PART!" 64
 if !ERRORLEVEL! EQU 0 (
set "EXPECTED_CHECKSUM=!CHECKSUM_PART!"
 exit /b 0
)
)
)
)
 REM Check if we've left the platform section (closing brace)
 echo !LINE!   | findstr /c:"}"  1>nul
 if !ERRORLEVEL! EQU 0 set "IN_PLATFORM_SECTION="
)
)

C:\play\claude-code-install>(
set "LINE=},"
 REM Check if this line contains our platform
 echo !LINE!   | findstr /c:"\"win32-x64\":"  1>nul
 if !ERRORLEVEL! EQU 0 (set "IN_PLATFORM_SECTION=1" )
 REM If we're in the platform section, look for checksum
 if defined IN_PLATFORM_SECTION (
echo !LINE!   | findstr /c:"\"checksum\":"  1>nul
 if !ERRORLEVEL! EQU 0 (
REM Extract checksum value
 for /F "tokens=2 delims=:" %j in ("!LINE!") do (
set "CHECKSUM_PART=%j"
 REM Remove quotes, whitespace, and comma
 set "CHECKSUM_PART=!CHECKSUM_PART: =!"
 set "CHECKSUM_PART=!CHECKSUM_PART:"=!"
 set "CHECKSUM_PART=!CHECKSUM_PART:,=!"
 REM Check if it looks like a SHA256 (64 hex chars)
 if not "!CHECKSUM_PART!" == "" (
call :check_length "!CHECKSUM_PART!" 64
 if !ERRORLEVEL! EQU 0 (
set "EXPECTED_CHECKSUM=!CHECKSUM_PART!"
 exit /b 0
)
)
)
)
 REM Check if we've left the platform section (closing brace)
 echo !LINE!   | findstr /c:"}"  1>nul
 if !ERRORLEVEL! EQU 0 set "IN_PLATFORM_SECTION="
)
)

C:\play\claude-code-install>(
set "LINE="linux-arm64-musl": {"
 REM Check if this line contains our platform
 echo !LINE!   | findstr /c:"\"win32-x64\":"  1>nul
 if !ERRORLEVEL! EQU 0 (set "IN_PLATFORM_SECTION=1" )
 REM If we're in the platform section, look for checksum
 if defined IN_PLATFORM_SECTION (
echo !LINE!   | findstr /c:"\"checksum\":"  1>nul
 if !ERRORLEVEL! EQU 0 (
REM Extract checksum value
 for /F "tokens=2 delims=:" %j in ("!LINE!") do (
set "CHECKSUM_PART=%j"
 REM Remove quotes, whitespace, and comma
 set "CHECKSUM_PART=!CHECKSUM_PART: =!"
 set "CHECKSUM_PART=!CHECKSUM_PART:"=!"
 set "CHECKSUM_PART=!CHECKSUM_PART:,=!"
 REM Check if it looks like a SHA256 (64 hex chars)
 if not "!CHECKSUM_PART!" == "" (
call :check_length "!CHECKSUM_PART!" 64
 if !ERRORLEVEL! EQU 0 (
set "EXPECTED_CHECKSUM=!CHECKSUM_PART!"
 exit /b 0
)
)
)
)
 REM Check if we've left the platform section (closing brace)
 echo !LINE!   | findstr /c:"}"  1>nul
 if !ERRORLEVEL! EQU 0 set "IN_PLATFORM_SECTION="
)
)

C:\play\claude-code-install>(
set "LINE="binary": "claude","
 REM Check if this line contains our platform
 echo !LINE!   | findstr /c:"\"win32-x64\":"  1>nul
 if !ERRORLEVEL! EQU 0 (set "IN_PLATFORM_SECTION=1" )
 REM If we're in the platform section, look for checksum
 if defined IN_PLATFORM_SECTION (
echo !LINE!   | findstr /c:"\"checksum\":"  1>nul
 if !ERRORLEVEL! EQU 0 (
REM Extract checksum value
 for /F "tokens=2 delims=:" %j in ("!LINE!") do (
set "CHECKSUM_PART=%j"
 REM Remove quotes, whitespace, and comma
 set "CHECKSUM_PART=!CHECKSUM_PART: =!"
 set "CHECKSUM_PART=!CHECKSUM_PART:"=!"
 set "CHECKSUM_PART=!CHECKSUM_PART:,=!"
 REM Check if it looks like a SHA256 (64 hex chars)
 if not "!CHECKSUM_PART!" == "" (
call :check_length "!CHECKSUM_PART!" 64
 if !ERRORLEVEL! EQU 0 (
set "EXPECTED_CHECKSUM=!CHECKSUM_PART!"
 exit /b 0
)
)
)
)
 REM Check if we've left the platform section (closing brace)
 echo !LINE!   | findstr /c:"}"  1>nul
 if !ERRORLEVEL! EQU 0 set "IN_PLATFORM_SECTION="
)
)

C:\play\claude-code-install>(
set "LINE="checksum": "e2223aa7ad06c216fa681996fa51388c1a8ba90cf0d5ce43f8ebaaa618d2b3b1","
 REM Check if this line contains our platform
 echo !LINE!   | findstr /c:"\"win32-x64\":"  1>nul
 if !ERRORLEVEL! EQU 0 (set "IN_PLATFORM_SECTION=1" )
 REM If we're in the platform section, look for checksum
 if defined IN_PLATFORM_SECTION (
echo !LINE!   | findstr /c:"\"checksum\":"  1>nul
 if !ERRORLEVEL! EQU 0 (
REM Extract checksum value
 for /F "tokens=2 delims=:" %j in ("!LINE!") do (
set "CHECKSUM_PART=%j"
 REM Remove quotes, whitespace, and comma
 set "CHECKSUM_PART=!CHECKSUM_PART: =!"
 set "CHECKSUM_PART=!CHECKSUM_PART:"=!"
 set "CHECKSUM_PART=!CHECKSUM_PART:,=!"
 REM Check if it looks like a SHA256 (64 hex chars)
 if not "!CHECKSUM_PART!" == "" (
call :check_length "!CHECKSUM_PART!" 64
 if !ERRORLEVEL! EQU 0 (
set "EXPECTED_CHECKSUM=!CHECKSUM_PART!"
 exit /b 0
)
)
)
)
 REM Check if we've left the platform section (closing brace)
 echo !LINE!   | findstr /c:"}"  1>nul
 if !ERRORLEVEL! EQU 0 set "IN_PLATFORM_SECTION="
)
)

C:\play\claude-code-install>(
set "LINE="size": 224919229"
 REM Check if this line contains our platform
 echo !LINE!   | findstr /c:"\"win32-x64\":"  1>nul
 if !ERRORLEVEL! EQU 0 (set "IN_PLATFORM_SECTION=1" )
 REM If we're in the platform section, look for checksum
 if defined IN_PLATFORM_SECTION (
echo !LINE!   | findstr /c:"\"checksum\":"  1>nul
 if !ERRORLEVEL! EQU 0 (
REM Extract checksum value
 for /F "tokens=2 delims=:" %j in ("!LINE!") do (
set "CHECKSUM_PART=%j"
 REM Remove quotes, whitespace, and comma
 set "CHECKSUM_PART=!CHECKSUM_PART: =!"
 set "CHECKSUM_PART=!CHECKSUM_PART:"=!"
 set "CHECKSUM_PART=!CHECKSUM_PART:,=!"
 REM Check if it looks like a SHA256 (64 hex chars)
 if not "!CHECKSUM_PART!" == "" (
call :check_length "!CHECKSUM_PART!" 64
 if !ERRORLEVEL! EQU 0 (
set "EXPECTED_CHECKSUM=!CHECKSUM_PART!"
 exit /b 0
)
)
)
)
 REM Check if we've left the platform section (closing brace)
 echo !LINE!   | findstr /c:"}"  1>nul
 if !ERRORLEVEL! EQU 0 set "IN_PLATFORM_SECTION="
)
)

C:\play\claude-code-install>(
set "LINE=},"
 REM Check if this line contains our platform
 echo !LINE!   | findstr /c:"\"win32-x64\":"  1>nul
 if !ERRORLEVEL! EQU 0 (set "IN_PLATFORM_SECTION=1" )
 REM If we're in the platform section, look for checksum
 if defined IN_PLATFORM_SECTION (
echo !LINE!   | findstr /c:"\"checksum\":"  1>nul
 if !ERRORLEVEL! EQU 0 (
REM Extract checksum value
 for /F "tokens=2 delims=:" %j in ("!LINE!") do (
set "CHECKSUM_PART=%j"
 REM Remove quotes, whitespace, and comma
 set "CHECKSUM_PART=!CHECKSUM_PART: =!"
 set "CHECKSUM_PART=!CHECKSUM_PART:"=!"
 set "CHECKSUM_PART=!CHECKSUM_PART:,=!"
 REM Check if it looks like a SHA256 (64 hex chars)
 if not "!CHECKSUM_PART!" == "" (
call :check_length "!CHECKSUM_PART!" 64
 if !ERRORLEVEL! EQU 0 (
set "EXPECTED_CHECKSUM=!CHECKSUM_PART!"
 exit /b 0
)
)
)
)
 REM Check if we've left the platform section (closing brace)
 echo !LINE!   | findstr /c:"}"  1>nul
 if !ERRORLEVEL! EQU 0 set "IN_PLATFORM_SECTION="
)
)

C:\play\claude-code-install>(
set "LINE="linux-x64-musl": {"
 REM Check if this line contains our platform
 echo !LINE!   | findstr /c:"\"win32-x64\":"  1>nul
 if !ERRORLEVEL! EQU 0 (set "IN_PLATFORM_SECTION=1" )
 REM If we're in the platform section, look for checksum
 if defined IN_PLATFORM_SECTION (
echo !LINE!   | findstr /c:"\"checksum\":"  1>nul
 if !ERRORLEVEL! EQU 0 (
REM Extract checksum value
 for /F "tokens=2 delims=:" %j in ("!LINE!") do (
set "CHECKSUM_PART=%j"
 REM Remove quotes, whitespace, and comma
 set "CHECKSUM_PART=!CHECKSUM_PART: =!"
 set "CHECKSUM_PART=!CHECKSUM_PART:"=!"
 set "CHECKSUM_PART=!CHECKSUM_PART:,=!"
 REM Check if it looks like a SHA256 (64 hex chars)
 if not "!CHECKSUM_PART!" == "" (
call :check_length "!CHECKSUM_PART!" 64
 if !ERRORLEVEL! EQU 0 (
set "EXPECTED_CHECKSUM=!CHECKSUM_PART!"
 exit /b 0
)
)
)
)
 REM Check if we've left the platform section (closing brace)
 echo !LINE!   | findstr /c:"}"  1>nul
 if !ERRORLEVEL! EQU 0 set "IN_PLATFORM_SECTION="
)
)

C:\play\claude-code-install>(
set "LINE="binary": "claude","
 REM Check if this line contains our platform
 echo !LINE!   | findstr /c:"\"win32-x64\":"  1>nul
 if !ERRORLEVEL! EQU 0 (set "IN_PLATFORM_SECTION=1" )
 REM If we're in the platform section, look for checksum
 if defined IN_PLATFORM_SECTION (
echo !LINE!   | findstr /c:"\"checksum\":"  1>nul
 if !ERRORLEVEL! EQU 0 (
REM Extract checksum value
 for /F "tokens=2 delims=:" %j in ("!LINE!") do (
set "CHECKSUM_PART=%j"
 REM Remove quotes, whitespace, and comma
 set "CHECKSUM_PART=!CHECKSUM_PART: =!"
 set "CHECKSUM_PART=!CHECKSUM_PART:"=!"
 set "CHECKSUM_PART=!CHECKSUM_PART:,=!"
 REM Check if it looks like a SHA256 (64 hex chars)
 if not "!CHECKSUM_PART!" == "" (
call :check_length "!CHECKSUM_PART!" 64
 if !ERRORLEVEL! EQU 0 (
set "EXPECTED_CHECKSUM=!CHECKSUM_PART!"
 exit /b 0
)
)
)
)
 REM Check if we've left the platform section (closing brace)
 echo !LINE!   | findstr /c:"}"  1>nul
 if !ERRORLEVEL! EQU 0 set "IN_PLATFORM_SECTION="
)
)

C:\play\claude-code-install>(
set "LINE="checksum": "46e941a6f6f354b47644cb132f33a2f55a9fc51fd84ec42fcf0355054aa79974","
 REM Check if this line contains our platform
 echo !LINE!   | findstr /c:"\"win32-x64\":"  1>nul
 if !ERRORLEVEL! EQU 0 (set "IN_PLATFORM_SECTION=1" )
 REM If we're in the platform section, look for checksum
 if defined IN_PLATFORM_SECTION (
echo !LINE!   | findstr /c:"\"checksum\":"  1>nul
 if !ERRORLEVEL! EQU 0 (
REM Extract checksum value
 for /F "tokens=2 delims=:" %j in ("!LINE!") do (
set "CHECKSUM_PART=%j"
 REM Remove quotes, whitespace, and comma
 set "CHECKSUM_PART=!CHECKSUM_PART: =!"
 set "CHECKSUM_PART=!CHECKSUM_PART:"=!"
 set "CHECKSUM_PART=!CHECKSUM_PART:,=!"
 REM Check if it looks like a SHA256 (64 hex chars)
 if not "!CHECKSUM_PART!" == "" (
call :check_length "!CHECKSUM_PART!" 64
 if !ERRORLEVEL! EQU 0 (
set "EXPECTED_CHECKSUM=!CHECKSUM_PART!"
 exit /b 0
)
)
)
)
 REM Check if we've left the platform section (closing brace)
 echo !LINE!   | findstr /c:"}"  1>nul
 if !ERRORLEVEL! EQU 0 set "IN_PLATFORM_SECTION="
)
)

C:\play\claude-code-install>(
set "LINE="size": 227717442"
 REM Check if this line contains our platform
 echo !LINE!   | findstr /c:"\"win32-x64\":"  1>nul
 if !ERRORLEVEL! EQU 0 (set "IN_PLATFORM_SECTION=1" )
 REM If we're in the platform section, look for checksum
 if defined IN_PLATFORM_SECTION (
echo !LINE!   | findstr /c:"\"checksum\":"  1>nul
 if !ERRORLEVEL! EQU 0 (
REM Extract checksum value
 for /F "tokens=2 delims=:" %j in ("!LINE!") do (
set "CHECKSUM_PART=%j"
 REM Remove quotes, whitespace, and comma
 set "CHECKSUM_PART=!CHECKSUM_PART: =!"
 set "CHECKSUM_PART=!CHECKSUM_PART:"=!"
 set "CHECKSUM_PART=!CHECKSUM_PART:,=!"
 REM Check if it looks like a SHA256 (64 hex chars)
 if not "!CHECKSUM_PART!" == "" (
call :check_length "!CHECKSUM_PART!" 64
 if !ERRORLEVEL! EQU 0 (
set "EXPECTED_CHECKSUM=!CHECKSUM_PART!"
 exit /b 0
)
)
)
)
 REM Check if we've left the platform section (closing brace)
 echo !LINE!   | findstr /c:"}"  1>nul
 if !ERRORLEVEL! EQU 0 set "IN_PLATFORM_SECTION="
)
)

C:\play\claude-code-install>(
set "LINE=},"
 REM Check if this line contains our platform
 echo !LINE!   | findstr /c:"\"win32-x64\":"  1>nul
 if !ERRORLEVEL! EQU 0 (set "IN_PLATFORM_SECTION=1" )
 REM If we're in the platform section, look for checksum
 if defined IN_PLATFORM_SECTION (
echo !LINE!   | findstr /c:"\"checksum\":"  1>nul
 if !ERRORLEVEL! EQU 0 (
REM Extract checksum value
 for /F "tokens=2 delims=:" %j in ("!LINE!") do (
set "CHECKSUM_PART=%j"
 REM Remove quotes, whitespace, and comma
 set "CHECKSUM_PART=!CHECKSUM_PART: =!"
 set "CHECKSUM_PART=!CHECKSUM_PART:"=!"
 set "CHECKSUM_PART=!CHECKSUM_PART:,=!"
 REM Check if it looks like a SHA256 (64 hex chars)
 if not "!CHECKSUM_PART!" == "" (
call :check_length "!CHECKSUM_PART!" 64
 if !ERRORLEVEL! EQU 0 (
set "EXPECTED_CHECKSUM=!CHECKSUM_PART!"
 exit /b 0
)
)
)
)
 REM Check if we've left the platform section (closing brace)
 echo !LINE!   | findstr /c:"}"  1>nul
 if !ERRORLEVEL! EQU 0 set "IN_PLATFORM_SECTION="
)
)

C:\play\claude-code-install>(
set "LINE="win32-x64": {"
 REM Check if this line contains our platform
 echo !LINE!   | findstr /c:"\"win32-x64\":"  1>nul
 if !ERRORLEVEL! EQU 0 (set "IN_PLATFORM_SECTION=1" )
 REM If we're in the platform section, look for checksum
 if defined IN_PLATFORM_SECTION (
echo !LINE!   | findstr /c:"\"checksum\":"  1>nul
 if !ERRORLEVEL! EQU 0 (
REM Extract checksum value
 for /F "tokens=2 delims=:" %j in ("!LINE!") do (
set "CHECKSUM_PART=%j"
 REM Remove quotes, whitespace, and comma
 set "CHECKSUM_PART=!CHECKSUM_PART: =!"
 set "CHECKSUM_PART=!CHECKSUM_PART:"=!"
 set "CHECKSUM_PART=!CHECKSUM_PART:,=!"
 REM Check if it looks like a SHA256 (64 hex chars)
 if not "!CHECKSUM_PART!" == "" (
call :check_length "!CHECKSUM_PART!" 64
 if !ERRORLEVEL! EQU 0 (
set "EXPECTED_CHECKSUM=!CHECKSUM_PART!"
 exit /b 0
)
)
)
)
 REM Check if we've left the platform section (closing brace)
 echo !LINE!   | findstr /c:"}"  1>nul
 if !ERRORLEVEL! EQU 0 set "IN_PLATFORM_SECTION="
)
)

C:\play\claude-code-install>(
set "LINE="binary": "claude.exe","
 REM Check if this line contains our platform
 echo !LINE!   | findstr /c:"\"win32-x64\":"  1>nul
 if !ERRORLEVEL! EQU 0 (set "IN_PLATFORM_SECTION=1" )
 REM If we're in the platform section, look for checksum
 if defined IN_PLATFORM_SECTION (
echo !LINE!   | findstr /c:"\"checksum\":"  1>nul
 if !ERRORLEVEL! EQU 0 (
REM Extract checksum value
 for /F "tokens=2 delims=:" %j in ("!LINE!") do (
set "CHECKSUM_PART=%j"
 REM Remove quotes, whitespace, and comma
 set "CHECKSUM_PART=!CHECKSUM_PART: =!"
 set "CHECKSUM_PART=!CHECKSUM_PART:"=!"
 set "CHECKSUM_PART=!CHECKSUM_PART:,=!"
 REM Check if it looks like a SHA256 (64 hex chars)
 if not "!CHECKSUM_PART!" == "" (
call :check_length "!CHECKSUM_PART!" 64
 if !ERRORLEVEL! EQU 0 (
set "EXPECTED_CHECKSUM=!CHECKSUM_PART!"
 exit /b 0
)
)
)
)
 REM Check if we've left the platform section (closing brace)
 echo !LINE!   | findstr /c:"}"  1>nul
 if !ERRORLEVEL! EQU 0 set "IN_PLATFORM_SECTION="
)
)

C:\play\claude-code-install>(
set "LINE="checksum": "743c3a8bfefe20f7d466517c8e5de2ad46bced461e970e48ea0ce980f209a9c3","
 REM Check if this line contains our platform
 echo !LINE!   | findstr /c:"\"win32-x64\":"  1>nul
 if !ERRORLEVEL! EQU 0 (set "IN_PLATFORM_SECTION=1" )
 REM If we're in the platform section, look for checksum
 if defined IN_PLATFORM_SECTION (
echo !LINE!   | findstr /c:"\"checksum\":"  1>nul
 if !ERRORLEVEL! EQU 0 (
REM Extract checksum value
 for /F "tokens=2 delims=:" %j in ("!LINE!") do (
set "CHECKSUM_PART=%j"
 REM Remove quotes, whitespace, and comma
 set "CHECKSUM_PART=!CHECKSUM_PART: =!"
 set "CHECKSUM_PART=!CHECKSUM_PART:"=!"
 set "CHECKSUM_PART=!CHECKSUM_PART:,=!"
 REM Check if it looks like a SHA256 (64 hex chars)
 if not "!CHECKSUM_PART!" == "" (
call :check_length "!CHECKSUM_PART!" 64
 if !ERRORLEVEL! EQU 0 (
set "EXPECTED_CHECKSUM=!CHECKSUM_PART!"
 exit /b 0
)
)
)
)
 REM Check if we've left the platform section (closing brace)
 echo !LINE!   | findstr /c:"}"  1>nul
 if !ERRORLEVEL! EQU 0 set "IN_PLATFORM_SECTION="
)
)

C:\play\claude-code-install>(
set "CHECKSUM_PART= "743c3a8bfefe20f7d466517c8e5de2ad46bced461e970e48ea0ce980f209a9c3","
 REM Remove quotes, whitespace, and comma
 set "CHECKSUM_PART=!CHECKSUM_PART: =!"
 set "CHECKSUM_PART=!CHECKSUM_PART:"=!"
 set "CHECKSUM_PART=!CHECKSUM_PART:,=!"
 REM Check if it looks like a SHA256 (64 hex chars)
 if not "!CHECKSUM_PART!" == "" (
call :check_length "!CHECKSUM_PART!" 64
 if !ERRORLEVEL! EQU 0 (
set "EXPECTED_CHECKSUM=!CHECKSUM_PART!"
 exit /b 0
)
)
)

C:\play\claude-code-install>REM Check if string length equals expected length

C:\play\claude-code-install>REM Args: "743c3a8bfefe20f7d466517c8e5de2ad46bced461e970e48ea0ce980f209a9c3"=String, 64=ExpectedLength

C:\play\claude-code-install>set "STR=743c3a8bfefe20f7d466517c8e5de2ad46bced461e970e48ea0ce980f209a9c3"

C:\play\claude-code-install>set "EXPECTED_LEN=64"

C:\play\claude-code-install>set "LEN=0"

C:\play\claude-code-install>if "!STR:~0,1!" == "" goto :count_done

C:\play\claude-code-install>set /a LEN+=1

C:\play\claude-code-install>goto :count_loop

C:\play\claude-code-install>if "!STR:~1,1!" == "" goto :count_done

C:\play\claude-code-install>set /a LEN+=1

C:\play\claude-code-install>goto :count_loop

C:\play\claude-code-install>if "!STR:~2,1!" == "" goto :count_done

C:\play\claude-code-install>set /a LEN+=1

C:\play\claude-code-install>goto :count_loop

C:\play\claude-code-install>if "!STR:~3,1!" == "" goto :count_done

C:\play\claude-code-install>set /a LEN+=1

C:\play\claude-code-install>goto :count_loop

C:\play\claude-code-install>if "!STR:~4,1!" == "" goto :count_done

C:\play\claude-code-install>set /a LEN+=1

C:\play\claude-code-install>goto :count_loop

C:\play\claude-code-install>if "!STR:~5,1!" == "" goto :count_done

C:\play\claude-code-install>set /a LEN+=1

C:\play\claude-code-install>goto :count_loop

C:\play\claude-code-install>if "!STR:~6,1!" == "" goto :count_done

C:\play\claude-code-install>set /a LEN+=1

C:\play\claude-code-install>goto :count_loop

C:\play\claude-code-install>if "!STR:~7,1!" == "" goto :count_done

C:\play\claude-code-install>set /a LEN+=1

C:\play\claude-code-install>goto :count_loop

C:\play\claude-code-install>if "!STR:~8,1!" == "" goto :count_done

C:\play\claude-code-install>set /a LEN+=1

C:\play\claude-code-install>goto :count_loop

C:\play\claude-code-install>if "!STR:~9,1!" == "" goto :count_done

C:\play\claude-code-install>set /a LEN+=1

C:\play\claude-code-install>goto :count_loop

C:\play\claude-code-install>if "!STR:~10,1!" == "" goto :count_done

C:\play\claude-code-install>set /a LEN+=1

C:\play\claude-code-install>goto :count_loop

C:\play\claude-code-install>if "!STR:~11,1!" == "" goto :count_done

C:\play\claude-code-install>set /a LEN+=1

C:\play\claude-code-install>goto :count_loop

C:\play\claude-code-install>if "!STR:~12,1!" == "" goto :count_done

C:\play\claude-code-install>set /a LEN+=1

C:\play\claude-code-install>goto :count_loop

C:\play\claude-code-install>if "!STR:~13,1!" == "" goto :count_done

C:\play\claude-code-install>set /a LEN+=1

C:\play\claude-code-install>goto :count_loop

C:\play\claude-code-install>if "!STR:~14,1!" == "" goto :count_done

C:\play\claude-code-install>set /a LEN+=1

C:\play\claude-code-install>goto :count_loop

C:\play\claude-code-install>if "!STR:~15,1!" == "" goto :count_done

C:\play\claude-code-install>set /a LEN+=1

C:\play\claude-code-install>goto :count_loop

C:\play\claude-code-install>if "!STR:~16,1!" == "" goto :count_done

C:\play\claude-code-install>set /a LEN+=1

C:\play\claude-code-install>goto :count_loop

C:\play\claude-code-install>if "!STR:~17,1!" == "" goto :count_done

C:\play\claude-code-install>set /a LEN+=1

C:\play\claude-code-install>goto :count_loop

C:\play\claude-code-install>if "!STR:~18,1!" == "" goto :count_done

C:\play\claude-code-install>set /a LEN+=1

C:\play\claude-code-install>goto :count_loop

C:\play\claude-code-install>if "!STR:~19,1!" == "" goto :count_done

C:\play\claude-code-install>set /a LEN+=1

C:\play\claude-code-install>goto :count_loop

C:\play\claude-code-install>if "!STR:~20,1!" == "" goto :count_done

C:\play\claude-code-install>set /a LEN+=1

C:\play\claude-code-install>goto :count_loop

C:\play\claude-code-install>if "!STR:~21,1!" == "" goto :count_done

C:\play\claude-code-install>set /a LEN+=1

C:\play\claude-code-install>goto :count_loop

C:\play\claude-code-install>if "!STR:~22,1!" == "" goto :count_done

C:\play\claude-code-install>set /a LEN+=1

C:\play\claude-code-install>goto :count_loop

C:\play\claude-code-install>if "!STR:~23,1!" == "" goto :count_done

C:\play\claude-code-install>set /a LEN+=1

C:\play\claude-code-install>goto :count_loop

C:\play\claude-code-install>if "!STR:~24,1!" == "" goto :count_done

C:\play\claude-code-install>set /a LEN+=1

C:\play\claude-code-install>goto :count_loop

C:\play\claude-code-install>if "!STR:~25,1!" == "" goto :count_done

C:\play\claude-code-install>set /a LEN+=1

C:\play\claude-code-install>goto :count_loop

C:\play\claude-code-install>if "!STR:~26,1!" == "" goto :count_done

C:\play\claude-code-install>set /a LEN+=1

C:\play\claude-code-install>goto :count_loop

C:\play\claude-code-install>if "!STR:~27,1!" == "" goto :count_done

C:\play\claude-code-install>set /a LEN+=1

C:\play\claude-code-install>goto :count_loop

C:\play\claude-code-install>if "!STR:~28,1!" == "" goto :count_done

C:\play\claude-code-install>set /a LEN+=1

C:\play\claude-code-install>goto :count_loop

C:\play\claude-code-install>if "!STR:~29,1!" == "" goto :count_done

C:\play\claude-code-install>set /a LEN+=1

C:\play\claude-code-install>goto :count_loop

C:\play\claude-code-install>if "!STR:~30,1!" == "" goto :count_done

C:\play\claude-code-install>set /a LEN+=1

C:\play\claude-code-install>goto :count_loop

C:\play\claude-code-install>if "!STR:~31,1!" == "" goto :count_done

C:\play\claude-code-install>set /a LEN+=1

C:\play\claude-code-install>goto :count_loop

C:\play\claude-code-install>if "!STR:~32,1!" == "" goto :count_done

C:\play\claude-code-install>set /a LEN+=1

C:\play\claude-code-install>goto :count_loop

C:\play\claude-code-install>if "!STR:~33,1!" == "" goto :count_done

C:\play\claude-code-install>set /a LEN+=1

C:\play\claude-code-install>goto :count_loop

C:\play\claude-code-install>if "!STR:~34,1!" == "" goto :count_done

C:\play\claude-code-install>set /a LEN+=1

C:\play\claude-code-install>goto :count_loop

C:\play\claude-code-install>if "!STR:~35,1!" == "" goto :count_done

C:\play\claude-code-install>set /a LEN+=1

C:\play\claude-code-install>goto :count_loop

C:\play\claude-code-install>if "!STR:~36,1!" == "" goto :count_done

C:\play\claude-code-install>set /a LEN+=1

C:\play\claude-code-install>goto :count_loop

C:\play\claude-code-install>if "!STR:~37,1!" == "" goto :count_done

C:\play\claude-code-install>set /a LEN+=1

C:\play\claude-code-install>goto :count_loop

C:\play\claude-code-install>if "!STR:~38,1!" == "" goto :count_done

C:\play\claude-code-install>set /a LEN+=1

C:\play\claude-code-install>goto :count_loop

C:\play\claude-code-install>if "!STR:~39,1!" == "" goto :count_done

C:\play\claude-code-install>set /a LEN+=1

C:\play\claude-code-install>goto :count_loop

C:\play\claude-code-install>if "!STR:~40,1!" == "" goto :count_done

C:\play\claude-code-install>set /a LEN+=1

C:\play\claude-code-install>goto :count_loop

C:\play\claude-code-install>if "!STR:~41,1!" == "" goto :count_done

C:\play\claude-code-install>set /a LEN+=1

C:\play\claude-code-install>goto :count_loop

C:\play\claude-code-install>if "!STR:~42,1!" == "" goto :count_done

C:\play\claude-code-install>set /a LEN+=1

C:\play\claude-code-install>goto :count_loop

C:\play\claude-code-install>if "!STR:~43,1!" == "" goto :count_done

C:\play\claude-code-install>set /a LEN+=1

C:\play\claude-code-install>goto :count_loop

C:\play\claude-code-install>if "!STR:~44,1!" == "" goto :count_done

C:\play\claude-code-install>set /a LEN+=1

C:\play\claude-code-install>goto :count_loop

C:\play\claude-code-install>if "!STR:~45,1!" == "" goto :count_done

C:\play\claude-code-install>set /a LEN+=1

C:\play\claude-code-install>goto :count_loop

C:\play\claude-code-install>if "!STR:~46,1!" == "" goto :count_done

C:\play\claude-code-install>set /a LEN+=1

C:\play\claude-code-install>goto :count_loop

C:\play\claude-code-install>if "!STR:~47,1!" == "" goto :count_done

C:\play\claude-code-install>set /a LEN+=1

C:\play\claude-code-install>goto :count_loop

C:\play\claude-code-install>if "!STR:~48,1!" == "" goto :count_done

C:\play\claude-code-install>set /a LEN+=1

C:\play\claude-code-install>goto :count_loop

C:\play\claude-code-install>if "!STR:~49,1!" == "" goto :count_done

C:\play\claude-code-install>set /a LEN+=1

C:\play\claude-code-install>goto :count_loop

C:\play\claude-code-install>if "!STR:~50,1!" == "" goto :count_done

C:\play\claude-code-install>set /a LEN+=1

C:\play\claude-code-install>goto :count_loop

C:\play\claude-code-install>if "!STR:~51,1!" == "" goto :count_done

C:\play\claude-code-install>set /a LEN+=1

C:\play\claude-code-install>goto :count_loop

C:\play\claude-code-install>if "!STR:~52,1!" == "" goto :count_done

C:\play\claude-code-install>set /a LEN+=1

C:\play\claude-code-install>goto :count_loop

C:\play\claude-code-install>if "!STR:~53,1!" == "" goto :count_done

C:\play\claude-code-install>set /a LEN+=1

C:\play\claude-code-install>goto :count_loop

C:\play\claude-code-install>if "!STR:~54,1!" == "" goto :count_done

C:\play\claude-code-install>set /a LEN+=1

C:\play\claude-code-install>goto :count_loop

C:\play\claude-code-install>if "!STR:~55,1!" == "" goto :count_done

C:\play\claude-code-install>set /a LEN+=1

C:\play\claude-code-install>goto :count_loop

C:\play\claude-code-install>if "!STR:~56,1!" == "" goto :count_done

C:\play\claude-code-install>set /a LEN+=1

C:\play\claude-code-install>goto :count_loop

C:\play\claude-code-install>if "!STR:~57,1!" == "" goto :count_done

C:\play\claude-code-install>set /a LEN+=1

C:\play\claude-code-install>goto :count_loop

C:\play\claude-code-install>if "!STR:~58,1!" == "" goto :count_done

C:\play\claude-code-install>set /a LEN+=1

C:\play\claude-code-install>goto :count_loop

C:\play\claude-code-install>if "!STR:~59,1!" == "" goto :count_done

C:\play\claude-code-install>set /a LEN+=1

C:\play\claude-code-install>goto :count_loop

C:\play\claude-code-install>if "!STR:~60,1!" == "" goto :count_done

C:\play\claude-code-install>set /a LEN+=1

C:\play\claude-code-install>goto :count_loop

C:\play\claude-code-install>if "!STR:~61,1!" == "" goto :count_done

C:\play\claude-code-install>set /a LEN+=1

C:\play\claude-code-install>goto :count_loop

C:\play\claude-code-install>if "!STR:~62,1!" == "" goto :count_done

C:\play\claude-code-install>set /a LEN+=1

C:\play\claude-code-install>goto :count_loop

C:\play\claude-code-install>if "!STR:~63,1!" == "" goto :count_done

C:\play\claude-code-install>set /a LEN+=1

C:\play\claude-code-install>goto :count_loop

C:\play\claude-code-install>if "!STR:~64,1!" == "" goto :count_done

C:\play\claude-code-install>if 64 == 64 exit /b 0

C:\play\claude-code-install>if !ERRORLEVEL! NEQ 0 (
echo Platform !PLATFORM! not found in manifest  1>&2
 del "!DOWNLOAD_DIR!\manifest.json"  2>nul
 exit /b 1
)

C:\play\claude-code-install>del "!DOWNLOAD_DIR!\manifest.json"

C:\play\claude-code-install>REM Download binary

C:\play\claude-code-install>set "BINARY_PATH=!DOWNLOAD_DIR!\claude-!VERSION!-!PLATFORM!.exe"

C:\play\claude-code-install>call :download_file "!GCS_BUCKET!/!VERSION!/!PLATFORM!/claude.exe" "!BINARY_PATH!"

C:\play\claude-code-install>REM Downloads a file using curl

C:\play\claude-code-install>REM Args: "https://storage.googleapis.com/claude-code-dist-86c565f3-f756-42ad-8dfa-d59b1c096819/claude-code-releases/2.1.71/win32-x64/claude.exe"=URL, "C:\Users\user1\.claude\downloads\claude-2.1.71-win32-x64.exe"=OutputPath

C:\play\claude-code-install>set "URL=https://storage.googleapis.com/claude-code-dist-86c565f3-f756-42ad-8dfa-d59b1c096819/claude-code-releases/2.1.71/win32-x64/claude.exe"

C:\play\claude-code-install>set "OUTPUT=C:\Users\user1\.claude\downloads\claude-2.1.71-win32-x64.exe"

C:\play\claude-code-install>curl -fsSL "!URL!" -o "!OUTPUT!"

C:\play\claude-code-install>exit /b !ERRORLEVEL!

C:\play\claude-code-install>if !ERRORLEVEL! NEQ 0 (
echo Failed to download binary  1>&2
 if exist "!BINARY_PATH!" del "!BINARY_PATH!"
 exit /b 1
)

C:\play\claude-code-install>REM Verify checksum

C:\play\claude-code-install>call :verify_checksum "!BINARY_PATH!" "!EXPECTED_CHECKSUM!"

C:\play\claude-code-install>REM Verify file checksum using certutil

C:\play\claude-code-install>REM Args: "C:\Users\user1\.claude\downloads\claude-2.1.71-win32-x64.exe"=FilePath, "743c3a8bfefe20f7d466517c8e5de2ad46bced461e970e48ea0ce980f209a9c3"=ExpectedChecksum

C:\play\claude-code-install>set "FILE_PATH=C:\Users\user1\.claude\downloads\claude-2.1.71-win32-x64.exe"

C:\play\claude-code-install>set "EXPECTED=743c3a8bfefe20f7d466517c8e5de2ad46bced461e970e48ea0ce980f209a9c3"

C:\play\claude-code-install>for /F "skip=1 tokens=*" %i in ('certutil -hashfile "!FILE_PATH!" SHA256') do (
set "ACTUAL=%i"
 set "ACTUAL=!ACTUAL: =!"
 if "!ACTUAL!" == "CertUtil:Thecommandcompletedsuccessfully." goto :verify_done
 if "!ACTUAL!" NEQ "" (if /I "!ACTUAL!" == "!EXPECTED!" (exit /b 0 )  else (exit /b 1 ) )
)

C:\play\claude-code-install>(
set "ACTUAL=743c3a8bfefe20f7d466517c8e5de2ad46bced461e970e48ea0ce980f209a9c3"
 set "ACTUAL=!ACTUAL: =!"
 if "!ACTUAL!" == "CertUtil:Thecommandcompletedsuccessfully." goto :verify_done
 if "!ACTUAL!" NEQ "" (if /I "!ACTUAL!" == "!EXPECTED!" (exit /b 0 )  else (exit /b 1 ) )
)

C:\play\claude-code-install>if !ERRORLEVEL! NEQ 0 (
echo Checksum verification failed  1>&2
 del "!BINARY_PATH!"
 exit /b 1
)

C:\play\claude-code-install>REM Run claude install to set up launcher and shell integration

C:\play\claude-code-install>echo Setting up Claude Code...
Setting up Claude Code...

C:\play\claude-code-install>"!BINARY_PATH!" install "!TARGET!"

× Installation failed

EPERM: operation not permitted, mkdir '\'


Try running with --force to override checks

C:\play\claude-code-install>set "INSTALL_RESULT=!ERRORLEVEL!"

C:\play\claude-code-install>REM Clean up downloaded file

C:\play\claude-code-install>REM Wait a moment for any file handles to be released

C:\play\claude-code-install>timeout /t 1 /nobreak  1>nul 2>&1

C:\play\claude-code-install>del /f "!BINARY_PATH!"  1>nul 2>&1

C:\play\claude-code-install>if exist "!BINARY_PATH!" (echo Warning: Could not remove temporary file: !BINARY_PATH! )

C:\play\claude-code-install>if !INSTALL_RESULT! NEQ 0 (
echo Installation failed  1>&2
 exit /b 1
)
Installation failed

Steps to Reproduce

Run the installer
curl -fsSL https://claude.ai/install.cmd -o install.cmd && install.cmd

NOTE: Below are versions of my apps which might be used for the install

where curl
C:\Windows\System32\curl.exe

curl --version
curl 8.13.0 (Windows) libcurl/8.13.0 Schannel zlib/1.3.1 WinIDN
Release-Date: 2025-04-02
Protocols: dict file ftp ftps http https imap imaps ipfs ipns mqtt pop3 pop3s smb smbs smtp smtps telnet tftp ws wss
Features: alt-svc AsynchDNS HSTS HTTPS-proxy IDN IPv6 Kerberos Largefile libz NTLM SPNEGO SSL SSPI threadsafe Unicode UnixSockets


where node
c:\p\nvm-nodejs\node.exe

node --version
v22.5.1

where claude
C:\Users\user1\.local\bin\claude.exe

claude --version
2.1.71 (Claude Code)

Claude Model

None

Is this a regression?

Yes, this worked in a previous version

Last Working Version

_No response_

Claude Code Version

2.1.71

Platform

Anthropic API

Operating System

Windows

Terminal/Shell

Windows Terminal

Additional Information

_No response_

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