Can't log in to Claude: causes and fixes
Is there an outage right now?
Claude official status is operational. If this error persists, it is likely an implementation or environment issue on your side.
Updated: Oct 25, 2026, 12:46 PM UTC
View Claude status →What this error means
Login fails or loops. Causes: auth outage, cookies, SSO, or region restrictions.
Common causes
- •Anthropic-side auth outage
- •Cookie/cache mismatch
- •SSO (Google, etc.) issue
- •VPN/extension interference
- •Region/account limits
- •Auth service temporarily unavailable ("Authentication service was unavailable. You can try again.")
How to fix
- 1.Clear cookies and cache
- 2.Try another browser / incognito
- 3.Disable VPN/extensions
- 4.Try a different sign-in
- 5.Check outage status at top of page
When waiting helps (and when it won't)
Auth outages recover over time. If official status is fine, clearing cookies or another browser helps.
Alternatives when Claude is down
Related symptoms
FAQ
What causes Claude login problems?
Login fails or loops. Causes: auth outage, cookies, SSO, or region restrictions.
How do I fix Claude login problems?
Clear cookies and cache / Try another browser / incognito / Disable VPN/extensions / Try a different sign-in / Check outage status at top of page