Citrix : LMC Authentication Error

Citrix : LMC Authentication Error

On opening the LMC you may receive the following error:
   “You did not authenticate correctly. Please try again or contact your System Administrator.”

To resolve this review the users listed in the following configuration file:
   %ProgramFiles%\Citrix\Licensing\LMC\Tomcat\conf\tomcat-users.xml

I experienced this error after migrating an administartive user account to a new domain, the account definition in the xml file was listed under the old domain. Modifying the old domain NETBIOS name to match the new domain NETBIOS name resolve the authentication issue.

It may be necessary to restart the Citrix Licensing Service after modification of the file.