Error: "License is not compatible with this version of the product"

Optional: Click to force the server to immediately check for a newer license key on the Veeam licensing servers. 4. Post-Update Verification

To activate Veeam Backup & Replication 12, you'll need a valid license key. If you've purchased a new license or upgraded from a previous version, you can obtain a license key from Veeam or your authorized reseller.