Firebase Auth errorFirebase Auth: auth/user-token-expired

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Why the session ended, and the fix

1. 01

   The password or email changed elsewhere

   “This includes events like password or email address updates.” Firebase, Manage user sessions

   A password reset on the web ends sessions on the phone. Treat the error as a normal sign-out and ask the user to sign in again.

   try {
     const token = await auth.currentUser?.getIdToken();
   } catch (error) {
     if (error.code === 'auth/user-token-expired') {
       await signOut(auth); // the web SDK signs out too; native SDKs may not
       router.push('/sign-in?reason=session-ended');
     }
   }

2. 02

   The user was deleted or disabled (usually a different code)

   “Refresh tokens expire only when one of the following occurs:” Firebase, Manage user sessions

   Deleting or disabling the account ends every session too, but expect auth/user-not-found or auth/user-disabled there. Handle all three the same way. A disabled user can be re-enabled; a deleted user has to sign up again.

3. 03

   An admin revoked the tokens

   “The Firebase Admin SDK provides the ability to revoke refresh tokens for a specified user.” Firebase, Manage user sessions

   Server code that calls revokeRefreshTokens, for example after a security event, signs the user out everywhere. That is expected; show the sign-in screen.

4. 04

   The app keeps retrying

   Also check: a loop that retries getIdToken on every error spins forever here. Stop on this code and sign out.

Checked against the vendor’s docs on November 9, 2026: Firebase docs: Manage user sessions.

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Related: Firebase auth/requires-recent-login · Firebase auth/user-disabled · Firebase auth/invalid-verification-code · Firebase auth/id-token-expired