[BUG]

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?

OS: Windows 10 Pro, Build 26200, UBR 8037, DisplayVersion 25H2
Claude Desktop: 1.1.7464.0
Error: signature verification initialization failed:
failed to get service executable path: The system cannot find the path specified.
Service: CoworkVMService (WIN32_PACKAGED_PROCESS), ExitCode 1066
Hyper-V: Enabled, vmcompute Running
ACL: NT AUTHORITY\SYSTEM:(F) confirmed on cowork-svc.exe
Fresh install confirmed same error.

What Should Happen?

OS: Windows 10 Pro, Build 26200, UBR 8037, DisplayVersion 25H2
Claude Desktop: 1.1.7464.0
Error: signature verification initialization failed:
failed to get service executable path: The system cannot find the path specified.
Service: CoworkVMService (WIN32_PACKAGED_PROCESS), ExitCode 1066
Hyper-V: Enabled, vmcompute Running
ACL: NT AUTHORITY\SYSTEM:(F) confirmed on cowork-svc.exe
Fresh install confirmed same error.

Error Messages/Logs

Steps to Reproduce

OS: Windows 10 Pro, Build 26200, UBR 8037, DisplayVersion 25H2
Claude Desktop: 1.1.7464.0
Error: signature verification initialization failed:
failed to get service executable path: The system cannot find the path specified.
Service: CoworkVMService (WIN32_PACKAGED_PROCESS), ExitCode 1066
Hyper-V: Enabled, vmcompute Running
ACL: NT AUTHORITY\SYSTEM:(F) confirmed on cowork-svc.exe
Fresh install confirmed same error.

Claude Model

None

Is this a regression?

No, this never worked

Last Working Version

_No response_

Claude Code Version

2.1.79 (Claude Code)

Platform

Anthropic API

Operating System

Windows

Terminal/Shell

Windows Terminal

Additional Information

_No response_