Packaging and install issues on Windows — page 2
Issues the maintainers labelled both platform:windows and area:packaging.
210 issues · 28 open · 182 resolved (87%) · first seen Jun 5, 2025
Is this getting better or worse?
This class of problem is holding steady. 38 new reports in the last 90 days vs 48 in the 90 before — -21%. The open backlog peaked at 42 in 2026-02 and sits at 28 today.
Derived by counting each matching issue from its creation date until it closed. First-party
computation over the anthropics/claude-code tracker — the trend is not published
anywhere upstream.
Which builds report this
126 of these reports name the Claude Code build they were running, spanning 75 releases. Heaviest reporters:
- Claude Code v2.1.39
- Claude Code v2.1.114
- Claude Code v2.1.112
- Claude Code v2.1.29
- Claude Code v2.1.15
- Claude Code v2.1.14
- Claude Code v2.1.229
- Claude Code v2.1.227
Report volume, not a defect count: an issue can mention a build without that build having caused the failure. Versions come from the version string in the bug-report template, matched against real published tags.
Do these get fixed?
Median time to close is 33 days across 182 closures. Of the 182 closures with a recorded reason, 34% were closed as completed and 120 as not-planned or duplicate. The most recent completed fix landed in 2026-08.
Workarounds reported by the community
64 of these issues post a workaround someone says worked. The highest-engagement ones:
- [BUG] Native Windows(Powershell) install of Claude Code is not viable
- Ran into this same issue tonight. Found workarounds that might help others: The binary does exist It's bundled inside the VS Code extension: Workaround Open a new PowerShell window and should work. Note: When the VS Code…
Found in the thread of #14902 · resolved - [BUG] Cowork tab not showing on Windows 11 Pro x64 — "yukonSilver" marked as unsupported + CoworkVMService cannot be removed
- …ot appear in the non-admin user's Start menu.</p <p <strong Workaround found:</strong Running <code Add-AppxPackage</code manually as the target user installs the MSIX correctly for that user.</p <h2 Steps to Reproduce</…
Found in the description of #25136 · resolved - Feature Request: Native Windows Claude Code CLI
- …large segment of the enterprise development market. Current workarounds (pre-staging context, manual command execution) significantly reduce CC's value proposition for Windows developers. The enterprise .NET ecosystem re…
Found in the description of #2458 · resolved - [BUG] Bun v1.3.5 crashes on Windows with "integer does not fit in destination type" - prevents installation and startup
- …n which also started happening recently ([link]( For now my workaround is to use wsl instead of powershell or the GUI
Found in the thread of #18567 · still open - [BUG] Claude Code crashes with Bun panic in Visual Studio Code on Windows 11
- …settings / advanced settings / more advanced settings) is a workaround to fix this.
Found in the thread of #19666 · still open
Excerpts are quoted from the linked issue so you can judge relevance before opening it. Threads that only ask for a workaround, or report that there is none, are excluded. These are community suggestions, not official guidance from Anthropic — read the full thread before applying one.
Matching issues 101–200
Ranked by community engagement (reactions weighted over comments).
- [BUG] Installation failing on Windows 11 Pro
- [Bug] Upgrade Fails: Zero-Byte Executable Replaces Existing Binary
- [BUG] claude: command not found
- CRASH BUG: panic(main thread): attempt to cast negative value to unsigned integer
- [BUG] Bun v1.4.0 segfault at 0xFFFFFFFFFFFFFFFF ~30 min into remote-bridged session - 'exited with code 3' (Windows 11 26200, CC 2.1.209)
- Windows auto-update renames bin/claude.exe to .old with no atomic fallback - kills all concurrent sessions (terminals, agents, Cursor) at once (v2.1.162)
- [BUG] 2.1.114+ on Windows triggers Bitdefender Advanced Threat Defense, causes abrupt mid-session kills
- [BUG] VS Code extension fails to activate on Windows - invalid file URL path
- [BUG] AVX detection issue on c7i.xlarge instance preventing execution
- Claude code not working on windows
- VS Code extension and CLI ship separate claude binaries, both write to ~/.claude/
- [BUG] Auto-update channel set to "stable" but updated beyond Stable version to Latest version
- [BUG] Not able to start claude.exe because of a AVX support for Bun in versions 2.1.75 and higher
- Voice mode on Windows: native audio-capture binary missing from npm package
- Request: Windows binaries for Claude Code 2.x
- [BUG] VS Code Claude Code Extension Stopped Working. (TypeError: The argument 'filename' must be a file URL object, file URL string, or absolute path string...)
- [BUG] Claude Desktop fails to launch on Windows 11 Home — "Claude Desktop failed to Launch" error dialog on every attempt
- [BUG] Session crashes silently on ARM64 Windows due to EPERM symlink failure during subagent spawn
- [BUG] Windows: napi-rs native addon temp files never cleaned up, accumulating 100+ GB
- claude install breaks existing npm-installed Claude Code on Windows
- [BUG] Windows Installation Broken
- [BUG] WSL binary executes Bash commands through Windows instead of the environment it was started in making claude code unusable for wsl!
- [BUG] PowerShell installer fails PATH setup silently when Git Bash not in standard location, leaves partial installation
- [BUG] Claude fails to start on Windows (fine on WSL)
- [BUG]
- [BUG] PowerShell wrapper fails with "StandardOutputEncoding is only supported when standard output is redirected" error
- Windows – install method keeps flipping (unknown ↔︎ npm-global) despite native install; want stable native setup
- Doctor command shows unknown install method for @anthropic-ai/claude-code
- Windows fail to launch in VSCode and Cursor
- Windows native CLI 2.1.250 launches embedded Bun instead of Claude Code
- Desktop Code tab cannot see any local sessions — packaging defect (%40ant folder) plus device-registry failure; CLI reads same files fine
- [BUG] claude.exe crashes with ACCESS_VIOLATION (0xc0000005) on Windows, repeatable, same code offset
- [BUG] Latest version of Claude Code on Windows desktop errors on every prompt submit - aka does not work (on my version of windows) - Bun 1.3.14 "Internal assertion failure" (ntdll) crashes BOTH desktop-bundled 2.1.170 and client CLI
- VS Code extension fails to activate: hardcoded Linux path in extension.js
- VS Code extension 2.1.136 fails activation on Windows with build-agent-sdk sdk.mjs path error
- [BUG] Claude code won't start / Error 3221225501 / "no_avx2 no_avx" / Bun💩..
- [Bug] WinGet update notification shows before package is available in repository
- Windows x64 repeated crash: Bun 1.3.11 panic: invalid enum value (fixed in oven-sh/bun#28721)
- [BUG] Claude 2.1.55 Not Working VSCode
- [BUG] VS Code extension v2.1.51 fails to activate on Windows — TypeError: invalid 'filename' argument referencing CI build path (sdk.mjs)
- [BUG] On MSYS2 a 6MB .node file is produced every time Claude uses grep
- [BUG] 🪲@ file autocomplete broken in Cursor terminal after npm → native migration
- Bun v1.3.5 crash: integer overflow panic on Windows with high memory usage
- [BUG] claude update and install script report success without actually updating on Windows
- [Bug] Chrome browser integration not functional
- [BUG]
- [BUG] VS Code Extension for Windows ARM64 Stuck at Version 2.0.46 - Cannot Update to Latest
- Windows: libsafewoo DLL deleted by Chinese antivirus software (360, Huorong)
- [BUG] Claude Code not installing
- [Bug] Windows installer script fails to install claude.exe to .local\bin
- [BUG] Windows native install script succeeded without creating claude.exe
- [BUG] bash: claude: command not found
- [BUG] Windows Claude Code versions after 2.0.24 signed with expired certificate
- [BUG] [Windows] VS Code extension fails with exit code 3 after Windows password change - Bun ENOTCONN error"
- [BUG] Claude Installer suggests `setx PATH` which destroys the PATH
- Bug Report
- How to (completely) uninstall it on windows?
- [BUG] Unable to Start Claude code on Windows 11
- Agent Loading Failure: Unable to Initialize Previously Created Agents
- Windows PowerShell Mode Selection Failure on Native Installation
- Title: Bun runtime segfault crashes claude-vscode after long-running session (v2.1.229)
- [BUG] Processus AMD A8-3800 supports SSE4.1/SSE4.2, but not AVX ni AVX2
- [BUG] Claude Code 2.1.149 crashes on Windows x64 with Bun 1.3.14 Illegal instruction when running --resume
- [BUG]
- [Bug] winget Update downloads outdated version 1.1.126 instead of latest 1.1.128
- [BUG] Crash C000001D (ILLEGAL_INSTRUCTION) running claude.exe — request for AVX-free build
- [BUG] Windows Desktop (MSIX) ships corrupted Claude Code binary
- [BUG] Cowork bundled claude-code-vm 2.1.111 crashes on launch with Bun TypeError; 2.1.87 on same machine works
- [FEATURE] Claudecode自带的Bun版本太低，导致奔溃严重。更新Bun版本。
- Claude Code downloads ~100MB from GCS on every startup with no way to disable
- [BUG] Claude Code tab "Failed to load session" on Windows MSIX install — claude.exe exits with code 3221225781 (0xC0000135)
- Voice mode unavailable on Windows: native audio-capture module not shipped in npm package
- [BUG] Claude Code CLI prevents Claude Desktop from launching — single instance lock conflict (Windows)
- Native .node addon temp files pollute system TEMP root directory
- [BUG] In-app updater does not deliver Cowork-enabled build on Windows — reports "latest version" incorrectly
- [BUG] Claude code desktop app installation (msix package) bug
- [BUG] Claude Desktop leaves ~10GB of data in AppData after uninstall
- [BUG] Launching claude but showing bun
- Support Windows Data Roaming for user configuration
- [BUG] Code tab fails silently when CCD binary download fails - no user-facing error message
- [BUG] Claude Code CLI crashes on Windows ARM64 - interactive mode exits immediately, -p mode fails
- [BUG] Error: Claude Code process exited with code 3221225477
- [BUG] Install silently fails on Windows 11 25H2
- Documentation made publicly accessible to newbies and non-technical users
- Search Tool Fails to Find Files with Periods in Namespace/Folder Paths on Windows
- Search Failure: Zero Results for Common Pattern Across Multiple File Types
- Agent Initialization Fails on Windows CLI with Incomplete Tab Completion
- Windows Smart App Control blocks signed Claude components on Windows 11 ARM64 (service killed, app crashes)
- [BUG] Same crash on my machine —
- [BUG] Intermittent Bun segfault at address 0x3C on session start — "Claude Code process exited with code 3" (Windows 11, Desktop app)
- [BUG] Bug type: Segmentation fault (native crash, not a JS exception)
- [FEATURE] don't add a windows start menu entry with every update
- Segfault in claude.exe (Bun 1.4.0) when fetching large URLs - Claude Code 2.1.185 / Windows 11
- [BUG] Native Windows CLI crashes at loader init (0xC0000005) before entry point — Win11 26200, i9-13900
- Git Bash shim for `claude` fails with mixed-separator path on Windows (MSYS)
- [BUG] Bun 1.3.14 panics 'Stack overflow' in JSC::preCommitStackMemory at startup when Windows system commit is exhausted (misreported OOM)
- [BUG][Windows][native-binary] v2.1.159+ silent-exits during startup — v2.1.112 unaffected
- [BUG] claude.exe not compatible with Windows 11 Insider build 26200 (version 2.1.162)
- False update available notification on v2.1.32
- [BUG] Windows: audio-capture.node is not a valid image (Error 0xc0e90002)