Scenario: A Citrix Engineer found that a high number of Desktop OS machines are reported as Unregistered. The engineer successfully logs in to one of the affected Desktop OS machines as a domain user and finds that all of the affected Desktop OS machines are on the same hosting infrastructure.
Several Desktop OS machines on the same hosting infrastructure registered successfully. However, the users in the environment have NOT reported any issues.
What is causing the Desktop OS machines to be reported as Unregistered?