Being a Windows or Citrix administrator, you may have experienced issues with machine domain memberships. The machine will appear to be working fine, but will sometimes give weird errors related to domain membership.

These issues tend to cause problems with the VDA registrations as well. So, it is always recommended that if you see any similar issues in your environment, try to remove the machine from the domain and then re-join it to the domain. After restart, the VDA machine should successfully register the VDA with the controllers.

For domain membership problems, you can enable Broker Agent logging, which can give you an insight into what is going wrong when the VDA is failing to register with the Controller server.

The example error log will look like this:

BrokerAgent:ConstructAndResolveRegistrarNames: Using IP Addresses; IP 172.31.38.21, Hostname xd01.testlab.com, m_UseIpv6Registration = False
BrokerAgent:=========>>>>> Attempting registration...