As previously communicated, on August 11, 2021 at 14:00 UTC for 48 hours, GitHub will be conducting the third and final scheduled brownout for API Authentication via Query Parameters.

If you are passing credentials via query or path parameters, GitHub will intermittently respond with client errors. Please refer to this blog post for details on authenticating API requests to GitHub using the Authorization header.


  • August 11, 2021: For 48 hours starting at 14:00 UTC


  • September 8 2021 at 14:00 UTC

Please check the latest Enterprise release notes to learn in which version API Authentication via Query Parameters will be removed.