HTTP Error 412 appears when accessing the web console even after reinstalling VPM more than 3 times.
First troubleshoot the issue by changing your debug level. Please refer to the following KB article: Enabling or disabling debug logging in Vulnerability Protection Manager (VPM).
When you check the server0.log, it shows the following:
Unable to connect to the database. Retrying in 10 seconds.
java.sql.SQLException: Cannot open database "vpm" requested by the login. The login failed.
To resolve the issue: