This article provides step to install the client for FSM when it has a database connection failure.
FSM version 6.6.5
Note: If the client was previously installed, uninstall the Client/Server from Programs and Features.
If the issue still persists:
1. Stop the Firebird service.
2. Delete it from Program Files/SolarWinds directory.
Note: Check if other SolarWinds products are installed. This will clear out all the configurations for FSM.
3. Re-run the Client installer.