1 - Ensure no questusr processes are active if they are kill them.
ps -ef | grep questusr
kill -9 <PID>
2 - Delete the questusr local user
userdel -r questusr
3- Select the policy server host and click profile
4 - Go to Wheel icon | System Settings | Privilege Manager "Configure service account" clicked on, error "Failed to connect to host. Verify you can connect to the host and try again."