In the event that the Veeam Backup & Replication configuration database is corrupted, the appropriate action to take is to perform a configuration restore. Veeam Backup & Replication allows you to back up and restore its configuration database. The Restore option should be used to recover the data from a configuration backup. This process will restore the configuration database from the backup file, which includes information about backup jobs, repository settings, and more. Instant Recovery, Failover, and Migrate are not appropriate options for recovering a corrupted configuration database. Instant Recovery is used to quickly restore a VM to a running state, Failover is used for High Availability in case a VM fails, and Migrate is used to move VMs from one host or storage to another.