ChatGPT login loop won't let me in
You enter your email and password, click sign in, and land right back at the login screen. No error message, no explanation — just an endless loop that keeps you locked out of ChatGPT.
ChatGPT login loop won't let me in
You enter your email and password, click sign in, and land right back at the login screen. No error message, no explanation — just an endless loop that keeps you locked out of ChatGPT.
What's actually happening
Login loops happen when your browser can't store the authentication cookie that proves you've signed in. ChatGPT sends you to OpenAI's auth system, you authenticate successfully, but when it tries to redirect you back with a session token, something blocks it. Your browser drops the cookie, forgets you signed in, and dumps you back at square one.
The most common trigger is aggressive privacy settings in Safari or Firefox that block third-party cookies by default. Browser extensions like ad blockers, privacy tools, or VPNs can intercept the authentication handshake. Corporate networks often strip cookies from OpenAI domains to enforce web filtering policies. Corrupted browser data — cached credentials, old session tokens, site permissions — can also jam the process.
You might see this pattern: you sign in, the page flashes to chatgpt.com for a split second, then immediately bounces back to auth0.openai.com/login. That flash means authentication worked but the session didn't stick.
How to fix it
1. Try incognito or private browsing mode first
Open a private window (Ctrl+Shift+N in Chrome, Cmd+Shift+N on Mac, Ctrl+Shift+P in Firefox) and go directly to chatgpt.com. Sign in from there. If this works, your regular browser has a settings or extension problem. Stay in the private window for now and keep reading.
2. Enable all cookies for OpenAI domains
Chrome: Settings → Privacy and security → Third-party cookies → Add → Allow → `[*.]openai.com` and `[*.]auth0.com`
Safari: Settings → Privacy → uncheck "Prevent cross-site tracking" and "Block all cookies"
Firefox: Settings → Privacy & Security → Enhanced Tracking Protection → Standard (or Custom with cookies allowed for openai.com)
Edge: Settings → Cookies and site permissions → Manage and delete cookies → Allow → add openai.com and auth0.com
3. Disable browser extensions temporarily
Turn off all extensions, especially: uBlock Origin, Privacy Badger, Ghostery, any VPN extensions, password managers (try signing in manually), and script blockers. Restart your browser completely — close all windows, not just tabs — then try signing in again.
4. Clear ChatGPT site data completely
Chrome/Edge: Click the padlock icon left of the URL → Site settings → Clear data (delete everything)
Firefox: Click the padlock → Clear Cookies and Site Data → chatgpt.com and openai.com
Safari: Settings → Privacy → Manage Website Data → search for openai → Remove
Then clear your entire browser cache: Settings → Privacy → Clear browsing data → Cached images and files, Cookies → Time range: All time → Clear data.
5. Switch networks
If you're on corporate or school WiFi, try mobile data or a phone hotspot. Networks with content filtering often block the authentication callback that completes sign-in. If switching networks fixes it, you'll need your IT department to whitelist `*.openai.com` and `*.auth0.com`.
6. Try a different browser
Download Chrome if you're on Safari, or Firefox if you're on Chrome. Sign in there with default settings. This isolates whether the problem is browser-specific configuration or something deeper.
If that doesn't work
Your account might have a backend authentication issue — rare, but it happens after password resets, email changes, or when OpenAI detects unusual sign-in patterns. Contact OpenAI support through help.openai.com/messages. Include:
- Your exact email address used for sign-in
- Browser and version (find in Settings → About)
- Whether incognito mode works
- Screenshot of the URL when you're stuck in the loop
- Any error codes or messages, even ones that flash briefly
Expect 1-3 business days for a response. Check your spam folder daily.
If you've been trying to sign in repeatedly, wait 30 minutes before trying again. Too many failed attempts can trigger rate limiting that looks identical to a login loop.
Questions people actually ask
Q: Why does this only happen in my main browser?
A: Because incognito mode ignores your extensions, site permissions, and cached data. Your main browser has settings or corrupted data blocking the authentication cookie.
Q: Can I stay signed in on mobile instead?
A: Yes — the ChatGPT iOS or Android app uses different authentication that rarely hits login loops. Download it as a temporary workaround while you fix your browser.
Q: Will deleting cookies sign me out of everything?
A: Yes. You'll need to sign back in to all websites. Export your passwords first if you don't use a password manager.
What to remember
- Try incognito mode first — if that works, your browser settings are the problem
- OpenAI authentication requires cookies from both openai.com and auth0.com domains
- Corporate networks often block the callback that completes sign-in
- Clear site data specifically for ChatGPT, not just your cache
- The mobile app bypasses browser issues entirely
Related help
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*openai-support.com is an independent resource, not affiliated with OpenAI Inc.*