Setup detects orphaned instances

If the setup program detects that there are registry entries for improperly installed or uninstalled instances on the current server, it displays a message something like:

The following instance-related registry key(s) under [HKLM\SOFTWARE\Bravura Security\Bravura Security Fabric\ have been orphaned,
and may not be needed any longer:
<instance>
Perform a clean-up?

Click Yes if you want to remove the registry entries for the orphaned instance.