I am running 2016 HyperV Server. Today around 7:54pm, I received a text from the user who was still working in the office that she could not access mapped drives.
I tried to access it (using Splashtop) remotely, but I could not log in.
I was able to access another Hyper-V server on the same network, tried to ping any virtual machines running off the main HyperV server, but I could not.
I figured that this main HyperV Server is either down, locked up or is in the middle of rebooting (sometimes reboot can take literally hours).
By the time I was ready to leave for the office, I was able to connect to this HyperV server using Splashtop.
When I checked the event viewer, I saw Event ID 1074.
Log Name: System
Date: 6/9/2021 7:44:36 PM
Event ID: 1074
The process C:\Windows\system32\svchost.exe (HYPERV) has initiated the restart of computer HYPERV
on behalf of user NT AUTHORITY\SYSTEM for the following reason
: Operating System: Service pack (Planned)
Reason Code: 0x80020010
Shutdown Type: restart
Also I discovered that this event has been recorded several times since Feb this year.
Is it possible to prevent this automatic restart? I usually reboot servers during weekends.
In the past, I have been able to reboot this server after applying windows updates or after seeing the message "Restart required" in Windows Update screen.