We are experiencing some issues with a number of our Multipoint Server 2010 machines. We also have many Multipoint 2011 machines, but are NOT experiencing this problem with them. We are not having any problems booting into maintenance mode, but normal mode just boots to a black screen. If you move the mouse cursor, it will flash white for a spit second then go back to the black screen. This happens when plugged directly into the machine or when using a hub. I have uninstalled/reinstalled both video drivers and NIC drivers, but the problem persists. One thing interesting, when I reinstalled the NIC drivers, I had to run the command to add back the 4 loopback adapters. When executing the command, it returned a message of "Error:", with no other information. However, the loopback adapters appeared to have been added back correctly. There were no Windows updates installed. The only errors that I've found in the event viewer are TerminalServices-Licensing warnings, which state "One or more RD licensing certificates has expired, please re-register." (Though this error has been occurring for quite some time, not just the past couple of days). I have also verified that the WMS licenses are applied.
The problem is that it's happening with many, but not all of our WMS 2010 servers. It's strange that it all happened at once and affected these machines. We shut down our computers nightly, so between the time they were shut down on Wed. night and booted
back up on Thurs. morning, something changed to break these machines. The only thing that would have updated would have been virus definition updates, but I can't find any indication that this is the issue (plus all of the machines would have received the
update, not just the WMS 2010. And this wouldn't explain why some, but not all 2010 machines are affected).
Yesterday, late afternoon we reimaged a WMS 2010 server with the same image and this morning it's still working properly. Does anyone have any suggestions of things too look at to see what may be breaking these machines?