[BUG] 1.1617.0 (8d6345): New Cowork sessions crash with "exited with code 1" - /doctor and /bug non-functional

[Shutiri]

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?

Version 1.1617.0 (8d6345), Windows
New Cowork sessions crash with "exited with code 1"
Existing sessions resume fine
Clear Cache and Restart didn't help
Rollback blocked by version gate
/doctor and /bug non-functional

What Should Happen?

Yesterday build was working just fine. Today it doesn't

Error Messages/Logs

Something went wrong
Claude Code process exited with code 1
You can restart the conversation from an earlier message.

ALSO: 
1. The side menu items are invisible. I know they are there, but not showing
2. The send button is invisible too.

Steps to Reproduce

I updated to latest version. That's all

Claude Model

Opus

Is this a regression?

Yes, this worked in a previous version

Last Working Version

Don't remember, the one from yesterday was fine

Claude Code Version

Doesn't work either.

Platform

Anthropic API

Operating System

Windows

Terminal/Shell

PowerShell

Additional Information

No response

[Shutiri]

Reset App Data.

Did nothing other than nuking my progress, all my sessions. For nothing.

[Shutiri]

The key points for the issue:

• Build 1.1617.0 / Claude Code 2.1.92 crashes with "exited with code 1" on new Cowork sessions when Git for Windows is not installed
• The actual error is buried in cowork_vm_node.log: "Claude Code was unable to find CLAUDE_CODE_GIT_BASH_PATH path bash.exe"
• No user-facing error message — just a crash. Previous builds didn't require Git for session creation
• Existing sessions resumed fine, masking the root cause
• /doctor and /bug also crash, so users can't even self-diagnose
  ### - Fix: install Git for Windows and add to PATH

What should have happened: a dialog saying "Git is required. Install it from git-scm.com" — not a silent crash that sent you down a two-hour rabbit hole of cache clearing, reset, backups, and rollback attempts.

[Shutiri]

Fix: install Git for Windows and add to PATH

[rededmond19]

Claude Code process exited with code 1
You can restart the conversation from an earlier message.

[emagazines20]

Additional report: Mac Sequoia, same build

Version: Claude 1.1617.0 (8d6345) 2026-04-09T16:10:15.000Z
OS: macOS Sequoia
Behavior: Opposite of the Windows report above -- new sessions accept input and work normally, but existing/prior sessions have a completely frozen prompt input field with no error indicator
Restarting Claude does not resolve it

[KaareSJ]

Title: Cowork new sessions crash with "exited with code 1" on Windows 10
Body:

Version: Claude 1.1617.0 (8d6345) 2026-04-09T16:10:15.000Z
OS: Windows 10 (English)
What's wrong:
New Cowork tasks fail immediately with "Claude Code process exited with code 1". The error appears after ~1 second. Existing/previous tasks also disappeared after clearing session data from %APPDATA%\Claude.
What I tried:

Restarted Claude Desktop
Restarted computer
Uninstalled and reinstalled Claude Desktop
Deleted Session Storage and local-agent-mode-sessions from %APPDATA%\Claude
Confirmed no ANTHROPIC_API_KEY environment variable set

None of the above resolved the issue.

[nir-ailon-ai]

I Am also suffering from this issue. installing git for windows did not help, neither did all the other ideas mentioned above

[jgolke11]

same issue here with CoWork: just throws out this error message starting this morning.

[lsemel]

Tried a variety of ways to fix this that Claude recommended, but no luck: cleared config, upgraded Claude Code, fixed plugin errors, fixed the Claude-3p permission, tried a different model. Claude Code works from the terminal.

App version: 1.3036.0
OS: macOS, Apple Silicon (Darwin arm64)
Node: 24.14.0
Claude Code (Homebrew): 2.1.92
Bundled SDK: 2.1.111
Crash reproduces on Opus 4.7 and Sonnet
Crash is 1 second after session init, error_category: 'process_crashed', no stderr reaches the UI
Survives full config wipe (~/.claude, ~/.claude.json, Claude-3p permission fix)