Once our farm is all Presentation Server 4.5, I found it hard to remove dead servers from the farm via AMC.

Occassionally we build VM Citrix servers for testing, and some VMs may be deleted before Citrix Presentation Server is uninstalled. Once this happens, for half of servers we are not able to remove it from AMC.

I tried the following without success:

1. Modify hosts file on the server running AMC. This resulted in a error event ID 4 kerberos duplicate server logged on the server.
2. Run dscheck before removing it from AMC. This did not help.

Eventually, I have to create a new vm with the same server name, install Presentation Server 4.5 and remove it right away to remove it from the farm.

After this I have checked with another 4 dead servers. I was able to delete two of them but not the other two.