Installation Fails with Patched Database

When installing Veeam Backup & Replication, selecting an existing configuration database fails due to the following error message:

Unable to use database VeeamBackup, because it was created with a later version of Veeam Backup and Replication.

OR

The Configuration Database Connection Settings utility is unable to select a database due to the following error message:

Unable to use database VeeamBackup, because it was not created with current version of Veeam Backup and Replication.

In older versions of the software, or if the configuration database location is changed via the registry, no error message appears, but the Veeam Backup Service fails to start.

When Veeam Backup & Replication is updated, the configuration database is upgraded and its version number is changed. The updated database is not compatible with the Generally Available version of the software.
 
For example, Veeam Backup & Replication v9 GA (9.0.0.902) is upgraded to v9 Update 1 (9.0.0.1491), and then uninstalled. In this scenario, attempting to reinstall from the v9 ISO using the existing configuration database will fail. This is because the database version is greater than the latest version supported by the software.

If Veeam Backup & Replication is already installed, apply the latest update.

 

If it is not installed:

1. Choose a new database name during installation. An empty database will be created with this name.
2. Once the installation has been completed, apply the latest update.
3. Switch which database the Veeam Backup & Replication software is using from the empty database to the original configuration database using the Configuration Database Connection Settings utility.

To delete the empty database after installation, use SQL Server Management Studio.

1. In Object Explorer, connect to the instance containing the empty database (default: localhost\VEEAMSQL2016).
2. Expand Databases, and right-click on the empty database, and select Delete.
3. Confirm the correct database is selected, and then click OK.