KB2991: Stopping all Veeam activities
https://www.veeam.com/kb299126.08.2019 · Note: Do not take the database offline when upgrading Veeam Backup & Replication as the upgrade installer will attempt to start the services after the upgrade. If the SQL Database is offline, the services cannot start, and the upgrade will likely fail. Locate information about which SQL Instance and Database being used by Veeam Backup & Replication