claude-code - 💡(How to fix) Fix [BUG] Gmail MCP write permissions blocked by Google ("This app is blocked") [1 comments, 2 participants]

Error Messages/Logs

TL;DR

The issue can likely be resolved by updating the OAuth configuration to comply with Google's security policies, allowing the app to access sensitive information in the Google Account.

Guidance

• Review the OAuth scopes and permissions requested by the Claude Code app to ensure they align with Google's requirements for accessing sensitive information.
• Check the Google Cloud Console to see if there are any restrictions or settings that need to be updated for the OAuth app.
• Verify that the app is registered as a trusted app in the Google Account settings, if applicable.
• Investigate if there are any changes in Google's security policies or OAuth requirements that may be causing the block.

Example

No code snippet is provided as the issue is related to configuration and OAuth settings.

Notes

The issue may be specific to personal Gmail accounts and not Google Workspace accounts. The fact that it worked in a previous version suggests a regression, possibly due to changes in Google's security policies or OAuth requirements.

Recommendation

Apply workaround: Update the OAuth configuration to comply with Google's security policies, as this is likely the cause of the issue. This should allow the app to access sensitive information in the Google Account and resolve the block.