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General

AWS security token in the request is expired

ExpiredTokenException

AWS rejected the request because the temporary security token included with the request is expired.

ExpiredTokenExceptionauthentication

Observed message

ExpiredTokenException

Why it happens

  • The temporary security credentials have expired.
  • The client is still using an old cached session token.
  • A long-lived process did not refresh temporary AWS credentials in time.

How to fix it

  1. Refresh the temporary AWS credentials.
  2. Restart or reauthenticate the client so it picks up the new session token.
  3. Review credential refresh logic for long-running processes.

Official reference

AWS Common Errors

Related errors

AccessDeniedExceptionAWS API request failed with AccessDeniedExceptionUnrecognizedClientExceptionAWS did not recognize the client credentials in the requestNotAuthorizedAWS request failed with NotAuthorizedMissingAuthenticationTokenAWS request is missing an authentication token

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AWS ExpiredTokenException: causes and fixes | Error Atlas