claude-code - 💡(How to fix) Fix [BUG] Cowork 403 "Request not allowed" on Pro plan [1 comments, 2 participants]

• Error: Failed to authenticate. API Error: 403 {"error":{"type":"forbidden","message":"Request not allowed"}} Cowork should authenticate successfully and allow task submission, just like Chat mode does on the same account. Currently, every task submitted in Cowork returns a 403 "Request not allowed" error immediately, while Chat mode works perfectly fine.

Error Messages/Logs

1. Immediately receive error: Failed to authenticate. API Error: 403 {"error":{"type":"forbidden","message":"Request not allowed"}}

TL;DR

The issue might be resolved by investigating differences in authentication handling between Chat and Cowork modes, potentially involving proxy settings or API request specifics.

Guidance

• Verify that the proxy settings are correctly applied for both Chat and Cowork modes, ensuring that the API requests are properly routed.
• Compare the API requests sent by Chat and Cowork modes to identify any differences that could lead to the 403 error, focusing on headers, parameters, or authentication tokens.
• Check the Anthropic API documentation for any specific requirements or restrictions on requests from Cowork mode that might not be met.
• Test the Cowork mode with a different project folder or task to see if the issue is specific to certain projects or tasks.

Example

No specific code example can be provided without more details on the API requests or authentication mechanisms used by Claude Code.

Notes

The issue seems to be specific to the Cowork mode and might be related to how authentication is handled differently compared to Chat mode. Without more information on the API requests or the exact authentication flow, it's challenging to provide a precise fix.

Recommendation

Apply workaround: Investigate and adjust the authentication settings or API request parameters for Cowork mode to align with the working configuration of Chat mode, as the root cause seems to be related to the differences in how these modes interact with the Anthropic API.