Can't change 'admin' logon name at ucs-sso.[intranet.tld]

  • SW Version
UCS 5.0-E75
  • Expected Behavior
Normal login to SSO settings
  • Actual Behavior
Login is unsuccessful and returns the following message; *"incorrect username or password.

Either no user with the given username could be found, or the password you gave was wrong. Please check the username and try again. "
  • Steps to reproduce
Click on the ‘Login as administrator’ link to the left of the page.
  • Demonstration of bug
This issue occurs at the following url https://ucs-sso.******.tld/simplesamlphp/module.php/core/frontpage_welcome.php

Thanks in advance