If ChatGPT is not working on Android today, the fastest fix is usually to force stop the app, clear its cache, and sign in again. If that does not work, check for a Play Store update, disable VPN or Private DNS, and test ChatGPT in Chrome to see whether the issue is your phone, network, or OpenAI.
Fix ChatGPT login failed fast by resetting the OpenAI session, allowing auth cookies/redirects, and removing extensions/VPN/DNS rules that break sign-in. Includes a cause-vs-fix table, browser-specific steps, and advanced fixes like HSTS/cache resets and corporate filtering checks.
ChatGPT login error 403 is almost always a block—not a bad password. This 2026 guide gives a fast checklist plus deeper browser, DNS, and work-network fixes (including advanced cache and TLS/inspection edge cases) to get you signed in quickly.
ChatGPT route error 500 on login after an update is most often caused by stale cookies/storage, a service worker cache mismatch, or an extension/VPN/proxy blocking the auth redirect. Use this fast checklist plus advanced cache/DNS/TLS fixes to restore login quickly.