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So…two weeks ago, toward the end of the day, two of my three HyperV hosts inexplicably shut down. After doing a little research, I found that both of my domain controllers had received automatic updates at 3:00 a.m. even though I had set them to “notify me when updates are available”. The domain controllers shut down and that apparently brought the HyperV hosts down. I asked around IT circles about the issue and was surprised (shocked) to learn from several people that they had the same thing happen. The situation really ticked me off but also begs the question “Why are we given the option if certain updates can install automatically anyway?”. Has anyone else had this happen to them? Is there a sure-fire way to prevent it in the future?

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I have not had a server do this.

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Use WSUS and GPO’s from now on.

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This has never happened to me on any server, physical or hosted. If you’re letting each server control its own updates then you’ve got an issue. That issue can easily be resolved by WSUS and GPO like Little Green Man recommends. It’s not matter of cost or anything. If anyone has a Windows domain environment and they aren’t leveraging the freely included services for things like updates then they will run into issues.

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