404 Error When Linking Google AI Studio to GitHub Despite Successful Login

Hi community,

I’m trying to deploy/upload my app from Google AI Studio to GitHub, but I keep getting a 404 error (“This is not the web page you are looking for”) in the popup after selecting my Google account during the OAuth flow. I’m clearly logged in (username shows at the top), but it fails right there.

Steps tried (all failed):

  • Used Incognito mode (Ctrl+Shift+N in Chrome)

  • Checked GitHub Settings > Applications: No authorized apps for Google AI Studio to revoke

  • Tried multiple browsers (Chrome, Edge), cleared cache/cookies for github.com and aistudio.google.com

This seems like a persistent backend OAuth/redirect issue. Any fixes or workarounds? Manual repo creation is an option but I’d prefer the integrated flow.

Environment:

  • Date: Feb 20, 2026

  • Google AI Studio (latest)

  • GitHub personal account (verified login)

Thanks for help!