KB1845: Installation Fails with Patched Database
https://www.veeam.com/kb184519.12.2013 · Unable to use database VeeamBackup, ... 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. ... An empty database will be created with this name.
KB1845: Installation Fails with Patched Database
www.veeam.com › kb1845Dec 19, 2013 · Expand Databases, right-click the empty database, and then click Delete. Confirm the correct database is selected, and then click OK. Legacy Method: The version number of the configuration database can be reverted with the following query: Use VeeamBackup UPDATE [Version] SET current_version = <see table below>