Fix: “Sign-In Failed – Error 403” When Logging in to ChatGPT Atlas on macOS (Google Login)
Some macOS users have reported that they can’t sign in to ChatGPT Atlas using the “Log in with Google” option. After authentication, the login window closes, but Atlas shows this error message:
Sign in failed
Failed to update user data. Please try again.
Error: An error occurred during fetching values for the user. 403
This issue was recently discussed on the OpenAI developer forum, where a user from India experienced the exact same problem. Restarting the app and signing in multiple times didn’t help.
What Causes Error 403 on Atlas Login?
Based on early reports from users and developers, the problem seems to come from one of these sources:
- Region or geo-restriction — Google OAuth may fail in certain countries.
- OAuth permissions glitch — Atlas cannot fetch user data after authentication.
- Corrupted cookies or cache — Login data fails to pass back to the app.
- Outdated Atlas build — Some early builds are unstable on macOS.
- Temporary server-side issue — Login may fail even if your device is fine.
OpenAI’s latest Release Notes (Build 1.2025.295.4 – October 28, 2025) mention a general login fix that prevented some users from signing in during onboarding. While it does not specifically confirm a fix for the Google login “403 – Failed to update user data” error on macOS, some users may find that updating to the newest build resolves the issue.
👉 Learn: ChatGPT Atlas Login Error Explained: The Server Certificate Could Not Be Verified
How to Fix the Problem
✅ 1. Use Email + Password Instead of Google Login
Many users confirmed that signing in directly with email and password works, even when Google login fails. If you originally created your account with Google, click “Forgot password” and set a new one.
✅ 2. Update Atlas to the Latest Version
OpenAI has been actively releasing bug fixes for macOS, including login issues. Install the newest version, restart the browser, and try again.
✅ 3. Clear App Cache and Login Data
On macOS, corrupted OAuth data can block authentication.
- Quit ChatGPT Atlas.
- Delete cache/temporary files.
- Reopen and try login again.
✅ 4. Try a Different Network or DNS
If the problem is region-related, switching networks sometimes works:
- Use mobile hotspot instead of Wi-Fi
- Try Cloudflare DNS (1.1.1.1) or Google DNS (8.8.8.8)
👉 Also Learn: Essential Tips and Fixes for ChatGPT Atlas
✅ 5. Use a VPN (If Region Blocked)
Some users outside the US report success after connecting through a VPN and then completing Google login. Once it works, the session may continue without VPN.
✅ 6. Sign Out of Google on the System, Then Try Again
In some cases, macOS OAuth tokens don’t refresh correctly. Logging out of your Google account and signing in again forces a new handshake.
If Nothing Works…
OpenAI Support has asked users to provide the following:
- Screenshot of the error message
- Time and date of the error
- Error ID if visible
- Your operating system version
You can contact OpenAI support here: https://help.openai.com
👉 Hot issues: ChatGPT Atlas Is Not Supported on This Mac
Conclusion
Error 403 during Google login on ChatGPT Atlas for macOS is usually connected to region restrictions, OAuth permission issues, or corrupted login data. The quickest workaround is using email + password and updating Atlas to the latest build. If the issue continues, send details to OpenAI Support so they can investigate your specific case.
Have you experienced the same problem? Share your device model, macOS version, and whether Google login works for you in the comments — it could help other users looking for a fix.
Post a Comment