### 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? When i install the latest claude version, it gave me an error related to administration issues. ### What Should Happen? Claude should have been install

[BUG] Can't install Claude Desktop

Resolved 💬 2 comments Opened May 14, 2026 by Joyanne05 Closed May 17, 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?

When i install the latest claude version, it gave me an error related to administration issues.
What Should Happen?

Claude should have been installed and used normally.
Error Messages/Logs

2026/05/14 15:52:01.072144 Log file: C:\Users\User\AppData\Local\Temp\ClaudeSetup.log
2026/05/14 15:52:01.072144 === Claude Setup 2dbd7802ab037cbb97d77be1a063241009b5e598 started ===
2026/05/14 15:52:01.074090 AllowAllTrustedApps not found (sideloading assumed enabled): The system cannot find the file specified.
2026/05/14 15:52:01.074090 Windows edition: CoreSingleLanguage
2026/05/14 15:52:01.074824 Windows version: 10.0.26200
2026/05/14 15:52:01.074824 Native arch: x64
2026/05/14 15:52:01.074824 Elevation type: Limited
2026/05/14 15:52:01.074824 Is elevated: false
2026/05/14 15:52:01.075459 Sideloading enabled: true
2026/05/14 15:52:01.075459 S Mode: false
2026/05/14 15:52:01.075459 Conflicting service: false
2026/05/14 15:52:01.075459 Running in non-elevated context
2026/05/14 15:52:01.075459 User can elevate — installing MSIX directly
2026/05/14 15:52:01.099552 Splash: 400x300, 8 frame(s), animated=true
2026/05/14 15:52:01.099552 System DPI: 144 (scale: 150%)
2026/05/14 15:52:01.169226 MSIX URL: https://api.anthropic.com/api/desktop/win32/x64/msix/latest/redirect
2026/05/14 15:52:01.170956 Downloading MSIX to C:\Users\User\AppData\Local\Temp\Claude-352467829.msix
2026/05/14 15:52:01.192733 proxy: WinHttpGetProxyForUrl("https://api.anthropic.com/api/desktop/win32/x64/msix/latest/redirect"): winapi error #12180
2026/05/14 15:52:01.555150 proxy: WinHttpGetProxyForUrl("https://downloads.claude.ai/releases/win32/x64/1.7196.0/Claude-2dbd7802ab037cbb97d77be1a063241009b5e598.msix"): winapi error #12180
2026/05/14 15:52:03.625338 Download progress: 10% (23461712 / 234482934 bytes)
2026/05/14 15:52:05.498061 Download progress: 20% (46923424 / 234482934 bytes)
2026/05/14 15:52:07.492673 Download progress: 30% (70351792 / 234482934 bytes)
2026/05/14 15:52:09.375097 Download progress: 40% (93813504 / 234482934 bytes)
2026/05/14 15:52:11.234740 Download progress: 50% (117258832 / 234482934 bytes)
2026/05/14 15:52:13.292306 Download progress: 60% (140704720 / 234482934 bytes)
2026/05/14 15:52:15.173269 Download progress: 70% (164150048 / 234482934 bytes)
2026/05/14 15:52:17.000515 Download progress: 80% (187611760 / 234482934 bytes)
2026/05/14 15:52:18.988382 Download progress: 90% (211056512 / 234482934 bytes)
2026/05/14 15:52:20.893722 Download progress: 100% (234482934 / 234482934 bytes)
2026/05/14 15:52:20.907284 Download complete: 234482934 bytes, SHA256: fe07f6ecfec343a4132ce5898414ee5a3156464aeb3dbefb10adda23abf77b5e
2026/05/14 15:52:20.910423 Download complete
2026/05/14 15:52:20.960554 Self-elevating: C:\Users\User\Downloads\Claude Setup (1).exe --elevated --msix-path "C:\Users\User\AppData\Local\Temp\Claude-352467829.msix" --log-path "C:\Users\User\AppData\Local\Temp\ClaudeSetup.log"
2026/05/14 15:52:25.426305 Waiting for elevated process to complete...
2026/05/14 15:52:25.450679 Log file: C:\Users\User\AppData\Local\Temp\ClaudeSetup.log
2026/05/14 15:52:25.451086 === Claude Setup 2dbd7802ab037cbb97d77be1a063241009b5e598 started ===
2026/05/14 15:52:25.453564 AllowAllTrustedApps not found (sideloading assumed enabled): The system cannot find the file specified.
2026/05/14 15:52:25.454135 Windows edition: CoreSingleLanguage
2026/05/14 15:52:25.456428 Windows version: 10.0.26200
2026/05/14 15:52:25.456428 Native arch: x64
2026/05/14 15:52:25.456428 Elevation type: Full
2026/05/14 15:52:25.456428 Is elevated: true
2026/05/14 15:52:25.456428 Sideloading enabled: true
2026/05/14 15:52:25.456428 S Mode: false
2026/05/14 15:52:25.456428 Conflicting service: false
2026/05/14 15:52:25.456428 Running in elevated context
2026/05/14 15:52:25.457024 Installing MSIX from C:\Users\User\AppData\Local\Temp\Claude-352467829.msix (all-users: false)
2026/05/14 15:52:25.510440 Splash: 400x300, 8 frame(s), animated=true
2026/05/14 15:52:25.510440 System DPI: 144 (scale: 150%)
2026/05/14 15:52:25.701999 Verifying Authenticode signature on C:\Users\User\AppData\Local\Temp\Claude-352467829.msix
2026/05/14 15:52:27.985970 WinVerifyTrust: MSIX signature is valid
2026/05/14 15:52:29.788392 Signature verified: MSIX signer matches bootstrapper
2026/05/14 15:52:29.788392 Squirrel process prefix: c:\users\user\appdata\local\anthropicclaude\
2026/05/14 15:52:29.788899 Checking for running Squirrel Claude processes...
2026/05/14 15:52:29.819832 Stopping: C:\Users\User\AppData\Local\AnthropicClaude\app-1.7196.0\claude.exe (PID 12692)
2026/05/14 15:52:29.821506 Stopping: C:\Users\User\AppData\Local\AnthropicClaude\app-1.7196.0\claude.exe (PID 33616)
2026/05/14 15:52:29.822036 Stopping: C:\Users\User\AppData\Local\AnthropicClaude\app-1.7196.0\claude.exe (PID 32840)
2026/05/14 15:52:29.822577 Stopping: C:\Users\User\AppData\Local\AnthropicClaude\app-1.7196.0\claude.exe (PID 29900)
2026/05/14 15:52:29.823236 Stopping: C:\Users\User\AppData\Local\AnthropicClaude\app-1.7196.0\claude.exe (PID 21732)
2026/05/14 15:52:29.823236 Stopping: C:\Users\User\AppData\Local\AnthropicClaude\app-1.7196.0\claude.exe (PID 8896)
2026/05/14 15:52:29.823779 Stopping: C:\Users\User\AppData\Local\AnthropicClaude\app-1.7196.0\claude.exe (PID 9160)
2026/05/14 15:52:29.824307 Stopping: C:\Users\User\AppData\Local\AnthropicClaude\app-1.7196.0\claude.exe (PID 16248)
2026/05/14 15:52:29.824307 Stopping: C:\Users\User\AppData\Local\AnthropicClaude\app-1.7196.0\claude.exe (PID 29724)
2026/05/14 15:52:29.824879 Terminated 9 Squirrel Claude process(es)
2026/05/14 15:52:29.824879 Checking for existing Claude MSIX packages...
2026/05/14 15:52:29.941036 Installing MSIX: C:\Users\User\AppData\Local\Temp\Claude-352467829.msix
2026/05/14 15:52:29.944020 Extracted family name from MSIX manifest: Claude_pzs8sxrjxfjjc
2026/05/14 15:52:29.944638 Standard install (not split-account), using AddPackage
2026/05/14 15:52:29.944638 Installing via AddPackage (current-user)...
2026/05/14 15:52:32.238759 MSIX installation failed: AddPackage failed: AddPackage failed with HRESULT 0x80073CFF
2026/05/14 15:52:32.239508 ERROR dialog (opening log): Installation failed: AddPackage failed: AddPackage failed with HRESULT 0x80073CFF

Please share this log with us.
2026/05/14 15:52:36.223114 Elevated process exited with code 1
2026/05/14 15:52:36.223114 Elevation failed: elevated installer exited with code 1
2026/05/14 15:52:36.223114 ERROR dialog (with log path): Administrator access is required to install Claude with full features. You can try again or install without Cowork.
2026/05/14 16:21:00.815303 Log file: C:\Users\User\AppData\Local\Temp\ClaudeSetup.log
2026/05/14 16:21:00.816387 === Claude Setup 2dbd7802ab037cbb97d77be1a063241009b5e598 started ===
2026/05/14 16:21:00.816914 AllowAllTrustedApps not found (sideloading assumed enabled): The system cannot find the file specified.
2026/05/14 16:21:00.817719 Windows edition: CoreSingleLanguage
2026/05/14 16:21:00.818241 Windows version: 10.0.26200
2026/05/14 16:21:00.818796 Native arch: x64
2026/05/14 16:21:00.818796 Elevation type: Limited
2026/05/14 16:21:00.818796 Is elevated: false
2026/05/14 16:21:00.818796 Sideloading enabled: true
2026/05/14 16:21:00.818796 S Mode: false
2026/05/14 16:21:00.818796 Conflicting service: false
2026/05/14 16:21:00.818796 Running in non-elevated context
2026/05/14 16:21:00.818796 User can elevate — installing MSIX directly
2026/05/14 16:21:00.853333 Splash: 400x300, 8 frame(s), animated=true
2026/05/14 16:21:00.853333 System DPI: 144 (scale: 150%)
2026/05/14 16:21:00.954357 MSIX URL: https://api.anthropic.com/api/desktop/win32/x64/msix/latest/redirect
2026/05/14 16:21:00.957144 Downloading MSIX to C:\Users\User\AppData\Local\Temp\Claude-2277527517.msix
2026/05/14 16:21:00.995815 proxy: WinHttpGetProxyForUrl("https://api.anthropic.com/api/desktop/win32/x64/msix/latest/redirect"): winapi error #12180
2026/05/14 16:21:01.388508 proxy: WinHttpGetProxyForUrl("https://downloads.claude.ai/releases/win32/x64/1.7196.0/Claude-2dbd7802ab037cbb97d77be1a063241009b5e598.msix"): winapi error #12180
2026/05/14 16:21:03.671083 Download progress: 10% (23478096 / 234482934 bytes)
2026/05/14 16:21:05.715394 Download progress: 20% (46907040 / 234482934 bytes)
2026/05/14 16:21:07.829439 Download progress: 30% (70368176 / 234482934 bytes)
2026/05/14 16:21:09.878811 Download progress: 40% (93797120 / 234482934 bytes)
2026/05/14 16:21:11.835463 Download progress: 50% (117242448 / 234482934 bytes)
2026/05/14 16:21:13.913724 Download progress: 60% (140704720 / 234482934 bytes)
2026/05/14 16:21:15.901029 Download progress: 70% (164166432 / 234482934 bytes)
2026/05/14 16:21:17.996106 Download progress: 80% (187595376 / 234482934 bytes)
2026/05/14 16:21:19.971322 Download progress: 90% (211056512 / 234482934 bytes)
2026/05/14 16:21:21.962383 Download progress: 100% (234482934 / 234482934 bytes)
2026/05/14 16:21:21.969897 Download complete: 234482934 bytes, SHA256: fe07f6ecfec343a4132ce5898414ee5a3156464aeb3dbefb10adda23abf77b5e
2026/05/14 16:21:21.974552 Download complete
2026/05/14 16:21:21.997492 Self-elevating: C:\Users\User\Downloads\Claude Setup (1).exe --elevated --msix-path "C:\Users\User\AppData\Local\Temp\Claude-2277527517.msix" --log-path "C:\Users\User\AppData\Local\Temp\ClaudeSetup.log"
2026/05/14 16:21:23.984383 Waiting for elevated process to complete...
2026/05/14 16:21:24.010521 Log file: C:\Users\User\AppData\Local\Temp\ClaudeSetup.log
2026/05/14 16:21:24.011120 === Claude Setup 2dbd7802ab037cbb97d77be1a063241009b5e598 started ===
2026/05/14 16:21:24.012348 AllowAllTrustedApps not found (sideloading assumed enabled): The system cannot find the file specified.
2026/05/14 16:21:24.012348 Windows edition: CoreSingleLanguage
2026/05/14 16:21:24.014284 Windows version: 10.0.26200
2026/05/14 16:21:24.014284 Native arch: x64
2026/05/14 16:21:24.014284 Elevation type: Full
2026/05/14 16:21:24.014284 Is elevated: true
2026/05/14 16:21:24.014284 Sideloading enabled: true
2026/05/14 16:21:24.014284 S Mode: false
2026/05/14 16:21:24.014284 Conflicting service: false
2026/05/14 16:21:24.014284 Running in elevated context
2026/05/14 16:21:24.014284 Installing MSIX from C:\Users\User\AppData\Local\Temp\Claude-2277527517.msix (all-users: false)
2026/05/14 16:21:24.057209 Splash: 400x300, 8 frame(s), animated=true
2026/05/14 16:21:24.058599 System DPI: 144 (scale: 150%)
2026/05/14 16:21:24.231117 Verifying Authenticode signature on C:\Users\User\AppData\Local\Temp\Claude-2277527517.msix
2026/05/14 16:21:25.434601 WinVerifyTrust: MSIX signature is valid
2026/05/14 16:21:25.928310 Signature verified: MSIX signer matches bootstrapper
2026/05/14 16:21:25.928310 Squirrel process prefix: c:\users\user\appdata\local\anthropicclaude\
2026/05/14 16:21:25.928310 Checking for running Squirrel Claude processes...
2026/05/14 16:21:25.936914 Stopping: C:\Users\User\AppData\Local\AnthropicClaude\app-1.7196.0\claude.exe (PID 33692)
2026/05/14 16:21:25.936914 Stopping: C:\Users\User\AppData\Local\AnthropicClaude\app-1.7196.0\claude.exe (PID 18212)
2026/05/14 16:21:25.936914 Stopping: C:\Users\User\AppData\Local\AnthropicClaude\app-1.7196.0\claude.exe (PID 4656)
2026/05/14 16:21:25.937508 Stopping: C:\Users\User\AppData\Local\AnthropicClaude\app-1.7196.0\claude.exe (PID 33180)
2026/05/14 16:21:25.937508 Stopping: C:\Users\User\AppData\Local\AnthropicClaude\app-1.7196.0\claude.exe (PID 28764)
2026/05/14 16:21:25.938095 Stopping: C:\Users\User\AppData\Local\AnthropicClaude\app-1.7196.0\claude.exe (PID 3764)
2026/05/14 16:21:25.938709 Stopping: C:\Users\User\AppData\Local\AnthropicClaude\app-1.7196.0\claude.exe (PID 33512)
2026/05/14 16:21:25.939284 Stopping: C:\Users\User\AppData\Local\AnthropicClaude\app-1.7196.0\claude.exe (PID 21732)
2026/05/14 16:21:25.939866 Stopping: C:\Users\User\AppData\Local\AnthropicClaude\app-1.7196.0\claude.exe (PID 29848)
2026/05/14 16:21:25.941153 Terminated 9 Squirrel Claude process(es)
2026/05/14 16:21:25.941153 Checking for existing Claude MSIX packages...
2026/05/14 16:21:26.109118 Installing MSIX: C:\Users\User\AppData\Local\Temp\Claude-2277527517.msix
2026/05/14 16:21:26.110871 Extracted family name from MSIX manifest: Claude_pzs8sxrjxfjjc
2026/05/14 16:21:26.110871 Standard install (not split-account), using AddPackage
2026/05/14 16:21:26.110871 Installing via AddPackage (current-user)...
2026/05/14 16:21:27.287006 MSIX installation failed: AddPackage failed: AddPackage failed with HRESULT 0x80073CFF
2026/05/14 16:21:27.287006 ERROR dialog (opening log): Installation failed: AddPackage failed: AddPackage failed with HRESULT 0x80073CFF

Please share this log with us.
2026/05/14 16:21:33.418273 Elevated process exited with code 1
2026/05/14 16:21:33.418660 Elevation failed: elevated installer exited with code 1
2026/05/14 16:21:33.418660 ERROR dialog (with log path): Administrator access is required to install Claude with full features. You can try again or install without Cowork.
2026/05/14 16:24:36.258441 Log file: C:\Users\User\AppData\Local\Temp\ClaudeSetup.log
2026/05/14 16:24:36.258441 === Claude Setup 2dbd7802ab037cbb97d77be1a063241009b5e598 started ===
2026/05/14 16:24:36.259670 AllowAllTrustedApps not found (sideloading assumed enabled): The system cannot find the file specified.
2026/05/14 16:24:36.259670 Windows edition: CoreSingleLanguage
2026/05/14 16:24:36.260798 Windows version: 10.0.26200
2026/05/14 16:24:36.260798 Native arch: x64
2026/05/14 16:24:36.260798 Elevation type: Limited
2026/05/14 16:24:36.260798 Is elevated: false
2026/05/14 16:24:36.260798 Sideloading enabled: true
2026/05/14 16:24:36.260798 S Mode: false
2026/05/14 16:24:36.260798 Conflicting service: false
2026/05/14 16:24:36.260798 Running in non-elevated context
2026/05/14 16:24:36.260798 User can elevate — installing MSIX directly
2026/05/14 16:24:36.302659 Splash: 400x300, 8 frame(s), animated=true
2026/05/14 16:24:36.302659 System DPI: 144 (scale: 150%)
2026/05/14 16:24:36.372295 MSIX URL: https://api.anthropic.com/api/desktop/win32/x64/msix/latest/redirect
2026/05/14 16:24:36.374057 Downloading MSIX to C:\Users\User\AppData\Local\Temp\Claude-3245730196.msix
2026/05/14 16:24:36.403020 proxy: WinHttpGetProxyForUrl("https://api.anthropic.com/api/desktop/win32/x64/msix/latest/redirect"): winapi error #12180
2026/05/14 16:24:36.760284 proxy: WinHttpGetProxyForUrl("https://downloads.claude.ai/releases/win32/x64/1.7196.0/Claude-2dbd7802ab037cbb97d77be1a063241009b5e598.msix"): winapi error #12180
2026/05/14 16:24:39.138269 Download progress: 10% (23478096 / 234482934 bytes)
2026/05/14 16:24:41.325469 Download progress: 20% (46907040 / 234482934 bytes)
2026/05/14 16:24:43.582135 Download progress: 30% (70351792 / 234482934 bytes)
2026/05/14 16:24:45.587285 Download progress: 40% (93797120 / 234482934 bytes)
2026/05/14 16:24:47.813257 Download progress: 50% (117242448 / 234482934 bytes)
2026/05/14 16:24:49.827039 Download progress: 60% (140704720 / 234482934 bytes)
2026/05/14 16:24:52.360098 Download progress: 70% (164166432 / 234482934 bytes)
2026/05/14 16:24:54.403546 Download progress: 80% (187611760 / 234482934 bytes)
2026/05/14 16:24:56.575289 Download progress: 90% (211056512 / 234482934 bytes)
2026/05/14 16:24:58.697553 Download progress: 100% (234482934 / 234482934 bytes)
2026/05/14 16:24:58.704299 Download complete: 234482934 bytes, SHA256: fe07f6ecfec343a4132ce5898414ee5a3156464aeb3dbefb10adda23abf77b5e
2026/05/14 16:24:58.707416 Download complete
2026/05/14 16:24:58.724816 Self-elevating: C:\Users\User\Downloads\Claude Setup (1).exe --elevated --msix-path "C:\Users\User\AppData\Local\Temp\Claude-3245730196.msix" --log-path "C:\Users\User\AppData\Local\Temp\ClaudeSetup.log"
2026/05/14 16:25:01.659874 Waiting for elevated process to complete...
2026/05/14 16:25:01.670851 Log file: C:\Users\User\AppData\Local\Temp\ClaudeSetup.log
2026/05/14 16:25:01.671446 === Claude Setup 2dbd7802ab037cbb97d77be1a063241009b5e598 started ===
2026/05/14 16:25:01.674452 AllowAllTrustedApps not found (sideloading assumed enabled): The system cannot find the file specified.
2026/05/14 16:25:01.675934 Windows edition: CoreSingleLanguage
2026/05/14 16:25:01.677446 Windows version: 10.0.26200
2026/05/14 16:25:01.677446 Native arch: x64
2026/05/14 16:25:01.677446 Elevation type: Full
2026/05/14 16:25:01.677446 Is elevated: true
2026/05/14 16:25:01.677446 Sideloading enabled: true
2026/05/14 16:25:01.677446 S Mode: false
2026/05/14 16:25:01.677446 Conflicting service: false
2026/05/14 16:25:01.677446 Running in elevated context
2026/05/14 16:25:01.677975 Installing MSIX from C:\Users\User\AppData\Local\Temp\Claude-3245730196.msix (all-users: false)
2026/05/14 16:25:01.711300 Splash: 400x300, 8 frame(s), animated=true
2026/05/14 16:25:01.711863 System DPI: 144 (scale: 150%)
2026/05/14 16:25:01.818638 Verifying Authenticode signature on C:\Users\User\AppData\Local\Temp\Claude-3245730196.msix
2026/05/14 16:25:03.080080 WinVerifyTrust: MSIX signature is valid
2026/05/14 16:25:03.648817 Signature verified: MSIX signer matches bootstrapper
2026/05/14 16:25:03.648817 Squirrel process prefix: c:\users\user\appdata\local\anthropicclaude\
2026/05/14 16:25:03.648817 Checking for running Squirrel Claude processes...
2026/05/14 16:25:03.662898 No Squirrel Claude processes found
2026/05/14 16:25:03.662898 Checking for existing Claude MSIX packages...
2026/05/14 16:25:03.694753 Installing MSIX: C:\Users\User\AppData\Local\Temp\Claude-3245730196.msix
2026/05/14 16:25:03.696400 Extracted family name from MSIX manifest: Claude_pzs8sxrjxfjjc
2026/05/14 16:25:03.696400 Standard install (not split-account), using AddPackage
2026/05/14 16:25:03.696400 Installing via AddPackage (current-user)...
2026/05/14 16:25:04.319335 MSIX installation failed: AddPackage failed: AddPackage failed with HRESULT 0x80073CFF
2026/05/14 16:25:04.319887 ERROR dialog (opening log): Installation failed: AddPackage failed: AddPackage failed with HRESULT 0x80073CFF

Please share this log with us.
2026/05/14 16:25:47.165627 Elevated process exited with code 1
2026/05/14 16:25:47.165627 Elevation failed: elevated installer exited with code 1
2026/05/14 16:25:47.166639 ERROR dialog (with log path): Administrator access is required to install Claude with full features. You can try again or install without Cowork.
2026/05/14 16:27:07.488643 Log file: C:\Users\User\AppData\Local\Temp\ClaudeSetup.log
2026/05/14 16:27:07.489209 === Claude Setup 2dbd7802ab037cbb97d77be1a063241009b5e598 started ===
2026/05/14 16:27:07.490788 AllowAllTrustedApps not found (sideloading assumed enabled): The system cannot find the file specified.
2026/05/14 16:27:07.490788 Windows edition: CoreSingleLanguage
2026/05/14 16:27:07.492253 Windows version: 10.0.26200
2026/05/14 16:27:07.492253 Native arch: x64
2026/05/14 16:27:07.492253 Elevation type: Full
2026/05/14 16:27:07.492253 Is elevated: true
2026/05/14 16:27:07.492253 Sideloading enabled: true
2026/05/14 16:27:07.492253 S Mode: false
2026/05/14 16:27:07.492253 Conflicting service: false
2026/05/14 16:27:07.492253 Running in non-elevated context
2026/05/14 16:27:07.492253 User can elevate — installing MSIX directly
2026/05/14 16:27:07.528320 Splash: 400x300, 8 frame(s), animated=true
2026/05/14 16:27:07.528320 System DPI: 144 (scale: 150%)
2026/05/14 16:27:07.699769 MSIX URL: https://api.anthropic.com/api/desktop/win32/x64/msix/latest/redirect
2026/05/14 16:27:07.701379 Downloading MSIX to C:\Users\User\AppData\Local\Temp\Claude-4078892767.msix
2026/05/14 16:27:07.724701 proxy: WinHttpGetProxyForUrl("https://api.anthropic.com/api/desktop/win32/x64/msix/latest/redirect"): winapi error #12180
2026/05/14 16:27:08.410941 proxy: WinHttpGetProxyForUrl("https://downloads.claude.ai/releases/win32/x64/1.7196.0/Claude-2dbd7802ab037cbb97d77be1a063241009b5e598.msix"): winapi error #12180
2026/05/14 16:27:10.047851 Download progress: 10% (23461712 / 234482934 bytes)
2026/05/14 16:27:11.922136 Download progress: 20% (46907040 / 234482934 bytes)
2026/05/14 16:27:13.602772 Download progress: 30% (70368176 / 234482934 bytes)
2026/05/14 16:27:15.249673 Download progress: 40% (93813504 / 234482934 bytes)
2026/05/14 16:27:16.647350 Download progress: 50% (117242448 / 234482934 bytes)
2026/05/14 16:27:18.507492 Download progress: 60% (140720544 / 234482934 bytes)
2026/05/14 16:27:20.196129 Download progress: 70% (164150048 / 234482934 bytes)
2026/05/14 16:27:21.842129 Download progress: 80% (187595376 / 234482934 bytes)
2026/05/14 16:27:23.974572 Download progress: 90% (211040128 / 234482934 bytes)
2026/05/14 16:27:25.980357 Download progress: 100% (234482934 / 234482934 bytes)
2026/05/14 16:27:25.985363 Download complete: 234482934 bytes, SHA256: fe07f6ecfec343a4132ce5898414ee5a3156464aeb3dbefb10adda23abf77b5e
2026/05/14 16:27:25.987076 Download complete
2026/05/14 16:27:26.064322 Self-elevating: C:\Users\User\Downloads\Claude Setup (1).exe --elevated --msix-path "C:\Users\User\AppData\Local\Temp\Claude-4078892767.msix" --log-path "C:\Users\User\AppData\Local\Temp\ClaudeSetup.log"
2026/05/14 16:27:26.334441 Waiting for elevated process to complete...
2026/05/14 16:27:26.361306 Log file: C:\Users\User\AppData\Local\Temp\ClaudeSetup.log
2026/05/14 16:27:26.361875 === Claude Setup 2dbd7802ab037cbb97d77be1a063241009b5e598 started ===
2026/05/14 16:27:26.363510 AllowAllTrustedApps not found (sideloading assumed enabled): The system cannot find the file specified.
2026/05/14 16:27:26.363510 Windows edition: CoreSingleLanguage
2026/05/14 16:27:26.364651 Windows version: 10.0.26200
2026/05/14 16:27:26.364651 Native arch: x64
2026/05/14 16:27:26.364651 Elevation type: Full
2026/05/14 16:27:26.364651 Is elevated: true
2026/05/14 16:27:26.364651 Sideloading enabled: true
2026/05/14 16:27:26.364651 S Mode: false
2026/05/14 16:27:26.364651 Conflicting service: false
2026/05/14 16:27:26.364651 Running in elevated context
2026/05/14 16:27:26.364651 Installing MSIX from C:\Users\User\AppData\Local\Temp\Claude-4078892767.msix (all-users: false)
2026/05/14 16:27:26.393155 Splash: 400x300, 8 frame(s), animated=true
2026/05/14 16:27:26.393691 System DPI: 144 (scale: 150%)
2026/05/14 16:27:26.543205 Verifying Authenticode signature on C:\Users\User\AppData\Local\Temp\Claude-4078892767.msix
2026/05/14 16:27:27.723376 WinVerifyTrust: MSIX signature is valid
2026/05/14 16:27:28.296542 Signature verified: MSIX signer matches bootstrapper
2026/05/14 16:27:28.297556 Squirrel process prefix: c:\users\user\appdata\local\anthropicclaude\
2026/05/14 16:27:28.297556 Checking for running Squirrel Claude processes...
2026/05/14 16:27:28.309545 Stopping: C:\Users\User\AppData\Local\AnthropicClaude\app-1.0.1768\claude.exe (PID 29632)
2026/05/14 16:27:28.310068 Stopping: C:\Users\User\AppData\Local\AnthropicClaude\app-1.0.1768\claude.exe (PID 34744)
2026/05/14 16:27:28.310068 Stopping: C:\Users\User\AppData\Local\AnthropicClaude\app-1.0.1768\claude.exe (PID 17360)
2026/05/14 16:27:28.310614 Stopping: C:\Users\User\AppData\Local\AnthropicClaude\app-1.0.1768\claude.exe (PID 31964)
2026/05/14 16:27:28.310614 Stopping: C:\Users\User\AppData\Local\AnthropicClaude\app-1.0.1768\claude.exe (PID 13144)
2026/05/14 16:27:28.311140 Stopping: C:\Users\User\AppData\Local\AnthropicClaude\app-1.0.1768\claude.exe (PID 31652)
2026/05/14 16:27:28.311140 Stopping: C:\Users\User\AppData\Local\AnthropicClaude\app-1.0.1768\claude.exe (PID 25044)
2026/05/14 16:27:28.311664 Stopping: C:\Users\User\AppData\Local\AnthropicClaude\app-1.0.1768\claude.exe (PID 30000)
2026/05/14 16:27:28.311664 Stopping: C:\Users\User\AppData\Local\AnthropicClaude\app-1.0.1768\claude.exe (PID 23272)
2026/05/14 16:27:28.312178 Terminated 9 Squirrel Claude process(es)
2026/05/14 16:27:28.312178 Checking for existing Claude MSIX packages...
2026/05/14 16:27:28.394856 Installing MSIX: C:\Users\User\AppData\Local\Temp\Claude-4078892767.msix
2026/05/14 16:27:28.406168 Extracted family name from MSIX manifest: Claude_pzs8sxrjxfjjc
2026/05/14 16:27:28.406168 Standard install (not split-account), using AddPackage
2026/05/14 16:27:28.406168 Installing via AddPackage (current-user)...
2026/05/14 16:27:29.229661 MSIX installation failed: AddPackage failed: AddPackage failed with HRESULT 0x80073CFF
2026/05/14 16:27:29.230671 ERROR dialog (opening log): Installation failed: AddPackage failed: AddPackage failed with HRESULT 0x80073CFF

Please share this log with us.
2026/05/14 16:27:41.169598 Elevated process exited with code 1
2026/05/14 16:27:41.169598 Elevation failed: elevated installer exited with code 1
2026/05/14 16:27:41.169598 ERROR dialog (with log path): Administrator access is required to install Claude with full features. You can try again or install without Cowork.
Steps to Reproduce

Installed Claude from downloads page
Click on executable file to install
Error pops out with log, asking me to share the log with the team
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

PowerShell
Additional Information

_No response_
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