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claude-code - 💡(How to fix) Fix [BUG] Claude Desktop 1.1617.0.0 fails to launch on Windows 11 — app crashes immediately, no window renders [1 comments, 2 participants]

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anthropics/claude-code#46123•Fetched 2026-04-11 06:28:28
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Error Message

Claude Desktop fails to launch immediately after a recent auto-update. The error dialog says: "Claude Desktop failed to launch. Please check for updates and try again." No window renders at all.

Error Messages/Logs

  1. Error dialog appears immediately: "Claude Desktop failed to launch. Please check for updates and try again."

Code Example

2026/04/10 10:05:01.365840 [Server]   Service: C:\Program Files\WindowsApps\Claude_1.1617.0.0_x64__pzs8sxrjxfjjc\app\resources\cowork-svc.exe
2026/04/10 10:05:01.365840 [Server]   Subject: Anthropic, PBC
2026/04/10 10:05:01.365840 [Server]   Thumbprint: dbde5d16768ed0c1...
2026/04/10 10:05:01.365840 [Server]   Enforce: true
2026/04/10 10:05:01.365840 [Server] Starting named pipe server on \\.\pipe\cowork-vm-service
2026/04/10 10:05:01.366988 [Server] Named pipe server listening
2026/04/10 10:05:01.366988 Service ready. Listening on \\.\pipe\cowork-vm-service
2026/04/10 10:16:47.165003 Service stop requested
2026/04/10 10:16:47.165003 Shutdown signal received...
2026/04/10 10:16:47.165003 [Server] Stopping server...
2026/04/10 10:16:47.165508 [Server] Server stopped
2026/04/10 10:16:47.165508 Service stopped.
2026/04/10 10:17:52.259156 Starting CoworkVMService as Windows service
2026/04/10 10:17:52.268889 Claude VM Service starting...
2026/04/10 10:17:52.268889 Waiting for configuration from app via 'configure' method...
2026/04/10 10:17:52.268889 [HCS] Initializing HCS DLLs...
2026/04/10 10:17:52.270049 Warning: failed to open service for recovery config: Access is denied.
2026/04/10 10:17:52.271744 [HCS] vmcompute.dll loaded successfully
2026/04/10 10:17:52.273000 [HCS] computecore.dll loaded successfully
2026/04/10 10:17:52.273000 [HCS] Procs initialized, HCS ready
2026/04/10 10:17:52.273000 [HCN] Initialized HCN API from computenetwork.dll
2026/04/10 10:17:52.275438 [HCN] EnumerateNetworks result: []
2026/04/10 10:17:52.541267 [Server] Signature verification initialized
2026/04/10 10:17:52.541267 [Server]   Service: C:\Program Files\WindowsApps\Claude_1.1617.0.0_x64__pzs8sxrjxfjjc\app\resources\cowork-svc.exe
2026/04/10 10:17:52.541267 [Server]   Subject: Anthropic, PBC
2026/04/10 10:17:52.541267 [Server]   Thumbprint: dbde5d16768ed0c1...
2026/04/10 10:17:52.541267 [Server]   Enforce: true
2026/04/10 10:17:52.541267 [Server] Starting named pipe server on \\.\pipe\cowork-vm-service
2026/04/10 10:17:52.541772 [Server] Named pipe server listening
2026/04/10 10:17:52.541772 Service ready. Listening on \\.\pipe\cowork-vm-service
RAW_BUFFERClick to expand / collapse

Preflight Checklist

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

What's Wrong?

Environment

Claude Desktop version: 1.1617.0.0 Windows 11 Claude.ai web interface works normally

What happens Claude Desktop fails to launch immediately after a recent auto-update. The error dialog says: "Claude Desktop failed to launch. Please check for updates and try again." No window renders at all. Troubleshooting already attempted

Uninstalled and reinstalled multiple times via PowerShell (Remove-AppxPackage) Removed all related folders manually Ran Claude Desktop as administrator — same result Checked Event Viewer (Application log) — no Claude-related entries found at all, suggesting the app crashes before Windows can log anything

Log findings C:\ProgramData\Claude\Logs\cowork-service.log shows CoworkVMService starts successfully every time:

HCS DLLs load fine Signature verification passes Named pipe server starts and listens on \.\pipe\cowork-vm-service Service then receives stop request shortly after — the app never connects

No main.log is created in the app data folders, confirming the Electron process crashes before writing any logs. Summary CoworkVMService starts fine but the main app process crashes immediately and never connects to the service. This started after an auto-update and persists through clean reinstalls.

What Should Happen?

Claude Desktop should launch normally and display the main window.

Error Messages/Logs

2026/04/10 10:05:01.365840 [Server]   Service: C:\Program Files\WindowsApps\Claude_1.1617.0.0_x64__pzs8sxrjxfjjc\app\resources\cowork-svc.exe
2026/04/10 10:05:01.365840 [Server]   Subject: Anthropic, PBC
2026/04/10 10:05:01.365840 [Server]   Thumbprint: dbde5d16768ed0c1...
2026/04/10 10:05:01.365840 [Server]   Enforce: true
2026/04/10 10:05:01.365840 [Server] Starting named pipe server on \\.\pipe\cowork-vm-service
2026/04/10 10:05:01.366988 [Server] Named pipe server listening
2026/04/10 10:05:01.366988 Service ready. Listening on \\.\pipe\cowork-vm-service
2026/04/10 10:16:47.165003 Service stop requested
2026/04/10 10:16:47.165003 Shutdown signal received...
2026/04/10 10:16:47.165003 [Server] Stopping server...
2026/04/10 10:16:47.165508 [Server] Server stopped
2026/04/10 10:16:47.165508 Service stopped.
2026/04/10 10:17:52.259156 Starting CoworkVMService as Windows service
2026/04/10 10:17:52.268889 Claude VM Service starting...
2026/04/10 10:17:52.268889 Waiting for configuration from app via 'configure' method...
2026/04/10 10:17:52.268889 [HCS] Initializing HCS DLLs...
2026/04/10 10:17:52.270049 Warning: failed to open service for recovery config: Access is denied.
2026/04/10 10:17:52.271744 [HCS] vmcompute.dll loaded successfully
2026/04/10 10:17:52.273000 [HCS] computecore.dll loaded successfully
2026/04/10 10:17:52.273000 [HCS] Procs initialized, HCS ready
2026/04/10 10:17:52.273000 [HCN] Initialized HCN API from computenetwork.dll
2026/04/10 10:17:52.275438 [HCN] EnumerateNetworks result: []
2026/04/10 10:17:52.541267 [Server] Signature verification initialized
2026/04/10 10:17:52.541267 [Server]   Service: C:\Program Files\WindowsApps\Claude_1.1617.0.0_x64__pzs8sxrjxfjjc\app\resources\cowork-svc.exe
2026/04/10 10:17:52.541267 [Server]   Subject: Anthropic, PBC
2026/04/10 10:17:52.541267 [Server]   Thumbprint: dbde5d16768ed0c1...
2026/04/10 10:17:52.541267 [Server]   Enforce: true
2026/04/10 10:17:52.541267 [Server] Starting named pipe server on \\.\pipe\cowork-vm-service
2026/04/10 10:17:52.541772 [Server] Named pipe server listening
2026/04/10 10:17:52.541772 Service ready. Listening on \\.\pipe\cowork-vm-service

Steps to Reproduce

  1. Launch Claude Desktop from Start menu
  2. Error dialog appears immediately: "Claude Desktop failed to launch. Please check for updates and try again."
  3. No window renders at all

Claude Model

Sonnet (default)

Is this a regression?

Yes, this worked in a previous version

Last Working Version

No response

Claude Code Version

N/A - This is a Claude Desktop issue, not Claude Code

Platform

Anthropic API

Operating System

Windows

Terminal/Shell

PowerShell

Additional Information

<img width="2282" height="452" alt="Image" src="https://github.com/user-attachments/assets/302a335e-eee7-4486-b039-be843d1636b9" /> <img width="1704" height="314" alt="Image" src="https://github.com/user-attachments/assets/57098d27-2598-4e59-b5b1-055e71a08f3f" /> <img width="2309" height="416" alt="Image" src="https://github.com/user-attachments/assets/9d3a1492-b457-4d50-be73-2e24405b50c5" /> <img width="2048" height="1485" alt="Image" src="https://github.com/user-attachments/assets/944d7fb5-09b7-489f-a59f-e1a63e71a320" /> <img width="2826" height="679" alt="Image" src="https://github.com/user-attachments/assets/8196899b-dab7-4c18-b4c9-a60e152bc005" /> <img width="2322" height="270" alt="Image" src="https://github.com/user-attachments/assets/b1974f99-a111-4ec1-923b-74b5362bbd65" /> <img width="1519" height="1035" alt="Image" src="https://github.com/user-attachments/assets/b2f27470-8478-45b0-a590-92859d8e9202" /> <img width="1532" height="733" alt="Image" src="https://github.com/user-attachments/assets/19e9ebc1-aaf8-4fe6-b5c1-4916cf566be6" /> <img width="1555" height="528" alt="Image" src="https://github.com/user-attachments/assets/5310ff59-0919-4663-bc3c-2a5de8f844ff" /> <img width="1534" height="741" alt="Image" src="https://github.com/user-attachments/assets/e9983462-9829-4216-bfbf-8a58cd549fa6" /> <img width="1543" height="875" alt="Image" src="https://github.com/user-attachments/assets/65dbdeaf-e7af-4bd5-9d4d-96b230d779ad" /> <img width="1536" height="914" alt="Image" src="https://github.com/user-attachments/assets/6ad03b8b-9a08-4ac4-b534-f972d59426d3" />

extent analysis

TL;DR

The most likely fix for the Claude Desktop launch issue is to investigate and resolve the potential compatibility or configuration problem introduced in the recent auto-update, considering the service starts but the main app process crashes immediately.

Guidance

  • Review the update changes: Examine the recent auto-update to identify potential breaking changes or new requirements that might be causing the crash.
  • Check system configuration: Verify that the system configuration, especially related to the cowork-vm-service, is correct and compatible with the updated version of Claude Desktop.
  • Analyze crash patterns: Since the main app process crashes before writing any logs, consider using external tools or debuggers to capture more information about the crash, which could provide clues about the root cause.
  • Test previous versions: If possible, test a previous version of Claude Desktop known to work to confirm if the issue is indeed related to the recent update.

Example

No specific code snippet can be provided without more details on the update or the exact nature of the crash. However, debugging the startup process of the Electron application might involve checking the main process for any errors or exceptions that occur early in the startup sequence.

Notes

The lack of log entries from the main application process limits the ability to diagnose the issue directly. External debugging tools or additional logging mechanisms might be necessary to gather more information about the crash.

Recommendation

Apply a workaround by potentially downgrading to a previous version of Claude Desktop if the exact cause of the issue cannot be determined and fixed promptly, ensuring that the application can be used while the root cause is investigated.

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#api#serialization error#model compatibility#GPU setup#container setup

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