claude-code - 💡(How to fix) Fix [BUG] Cowork crashes with "Claude Code process exited with code 1" on macOS - all new sessions affected [7 comments, 8 participants]

Error Messages/Logs

1. Error appears immediately: "Claude Code process exited with code 1"

TL;DR

The issue can be potentially resolved by investigating and addressing the changes made after the April 15, 2026 Anthropic outage, which may have introduced a compatibility issue with the current version of Claude Code.

Guidance

• Review the release notes and changelogs for Claude Code and Anthropic API updates around the April 15, 2026 outage to identify potential breaking changes.
• Verify if the issue persists when using a different version of Claude Code, if available, to isolate the problem.
• Check for any environment-specific configurations or dependencies that may have been altered during the outage, such as API keys or authentication mechanisms.
• Consider reaching out to the Anthropic support team to inquire about any known issues or updates related to the outage that may be affecting Claude Code.

Example

No specific code snippet can be provided without more detailed information about the internal workings of Claude Code and the Anthropic API.

Notes

The provided information suggests a regression introduced after a specific event (the Anthropic outage), which narrows down the potential causes. However, without more technical details about the changes made during the outage or the internal workings of Claude Code, it's challenging to provide a definitive fix.

Recommendation

Apply workaround: Given the uncertainty around the root cause and the lack of a clear fix, applying a workaround, such as using a previous version of Claude Code if possible, or awaiting an update from the developers that addresses the compatibility issue introduced by the Anthropic outage, seems prudent.