: If your backup server is air-gapped (offline), log into the Veeam portal, select your active contract, and manually click "Upgrade License" to generate the v12 compatible key file. Share public link
Operating Veeam Backup & Replication 12 requires a valid, digitally signed license file (typically ending in a .lic extension). Step-by-Step Installation Access the Veeam Backup & Replication Console . veeam backup and replication 12 license key
Are you currently using or Instance-based (VUL) licensing? : If your backup server is air-gapped (offline),