Invalid credentials message during an upgrade: Validation failed: The specified WinService user ('domain\username') is not a domain user (4233911)

When attempting to enter credentials for the Desktop Authority Manager or the Operations service during an upgrade it fails and returns an invalid credentials message.

DAInstaller.log may display:

Validation failed: The specified WinService user ('domain\username') is not a domain user. 

The Desktop Authority Manager Service or the Desktop Authority Operations Service may not be started and/or may not be using the correct account username or password.

Launch the Desktop Authority Setup Tool and change the accounts/passwords for these two services and try the installation again.

• Go to Start | All Programs | Quest | Desktop Authority Manager | Desktop Authority Setup Tool.
• Go to the "Service Management" tab.
• Edit the accounts and/or passwords for the Desktop Authority Manager and Operations services.
• Start both services, or restart if already started.
• Close the Desktop Authority Setup Tool.
• Launch the installer again to see if the issue is resolved.