I’ll throw my hat in with this exact issue as well,
Just dropped a support ticket to report that my server has been restarting without permission from myself.
Even Windows Update doesn’t restart the server without me directly requesting.
I believe the first instance we noticed it restart was Thursday the 1st of September at 4pm, this is the time the bulk of our data entry comes in and I began receiving calls saying people are getting thrown out.
I find i was unable to RDP to the server and instead had to use the KVM to see what was going on. I find the server mid restart and has now decided to do the windows update which was supposed to happen on the saturday.
So 45minutes later, the server finally settles down to where I can access the drives and work can now start.
Monday the 12th of September around 8am, I’m informed that people cannot access the server again. I take a look, the server had restarted. I had disabled automatic windows updates so no more long waits.
Today (Tuesday) 13th of September around 8am, once again I see the server has restarted… I need to completely stop Avast from initiating a restart. Either give me the option to schedule periods where it is not critical or make it so I must manually install these updates.