401 Unauthorized

Meaning

Authentication is required but missing, expired, or invalid.

Causes

• Expired session
• Missing token/key
• Invalid auth header

How to fix

• Sign in again
• Refresh the token
• Include valid credentials in the request

Example

HTTP/1.1 401 Unauthorized

Official references

IANA HTTP Status Code RegistryOfficialRegistryhttps://www.iana.org/assignments/http-status-codesOpen in new tab MDN HTTP response status codesReferenceDocshttps://developer.mozilla.org/en-US/docs/Web/HTTP/StatusOpen in new tab RFC 9110 (HTTP Semantics)ReferenceSpechttps://www.rfc-editor.org/rfc/rfc9110Open in new tab RFC 9110: 401 status codeReferenceSpechttps://www.rfc-editor.org/rfc/rfc9110Open in new tab

FAQ

• It happens even after login? — Your token may be expired or lacking required scope.
• What if it keeps happening? — Refresh the token and verify permission scopes.

When to contact support

Contact support if you suspect an account issue.