A year and a half ago we needed to bounce our main Hyper-V server which have 3 virtual machines running. The reason being I tried to login using my remote application and I could not but I could login remotely to the virtual machines remotely that's running inside the main server.
When I returned to the office the next day I noticed several errors on the event logs. Regarding DHCP, DNS, AWDS, Domain ext.. I went to the DHCP application and saw the red x on the site. I tried to restart the DNS, DHCP service and they would not. So I just restarted the server and we have been good ever since until this past Friday.
I tried logging into my server exact same scenario that happend above a year and a half ago. Saw the same errors these are some from the event log.
Event ID 1054 - Group Policy
Event ID 1059 - DHCP Server Active Directory Visibility
Event ID 1202 - ADWS
So I restarted the server and everything is working as it should. I this something that happenes normally if you dont reboot servers? I cannot find the cause of why the exact same thing happened a year and a half ago.