[Home](./index.md) > [@firebase/auth](./auth.md) > [reauthenticateWithCredential](./auth.reauthenticatewithcredential.md) ## reauthenticateWithCredential() function Re-authenticates a user using a fresh credential. Signature: ```typescript export declare function reauthenticateWithCredential(user: User, credential: AuthCredential): Promise; ``` ## Parameters | Parameter | Type | Description | | --- | --- | --- | | user | [User](./auth.user.md) | The user. | | credential | [AuthCredential](./auth.authcredential.md) | The auth credential. | Returns: Promise<[UserCredential](./auth.usercredential.md)> ## Remarks Use before operations such as [updatePassword()](./auth.updatepassword.md) that require tokens from recent sign-in attempts. This method can be used to recover from a CREDENTIAL\_TOO\_OLD\_LOGIN\_AGAIN error.