Veeam Backup And Replication 12 License Key [work] Page

Generally, if you have an active maintenance contract, your V11 key will work for V12. However, it is best to log into the Veeam License Portal to "upgrade" your key to the version 12 format to ensure all new features are fully enabled.

Finding the right license key for Veeam Backup & Replication 12 veeam backup and replication 12 license key