name : resync-mfa-device.rst **To synchronize an MFA device** The following ``resync-mfa-device`` example synchronizes the MFA device that is associated with the IAM user ``Bob`` and whose ARN is ``arn:aws:iam::123456789012:mfa/BobsMFADevice`` with an authenticator program that provided the two authentication codes. :: aws iam resync-mfa-device \ --user-name Bob \ --serial-number arn:aws:iam::210987654321:mfa/BobsMFADevice \ --authentication-code1 123456 \ --authentication-code2 987654 This command produces no output. For more information, see `Using multi-factor authentication (MFA) in AWS <https://docs.aws.amazon.com/IAM/latest/UserGuide/id_credentials_mfa.html>`__ in the *AWS IAM User Guide*.