After a crash of the Operating System or after restoring a Veeam Configuration Database Backup file “Veeam Backup Service” is not able to start.
In this case, a lock in the database may cause the issue.
To delete the lock, open a command prompt with administrator privileges. Then connect to your database using the osql command:
osql -S VeeamServer\VEEAMSQL2016 -E -d VeeamBackup
VeeamServer = Server name | VeeamSQL2016 = Instance name | VeeamBackup = database name
When connected, use the following commands to get rid of the locks:
DELETE from [dbo].[Options] WHERE name = ‘lock_info’
Now the “Veeam Backup Service” should be able to start successfully.