Running an EC2 instance with Server 2012. Windows is set to Automatically Install Updates. I am not sure what update is causing it, but it was installed after December 1. When this update reboots the server, the server goes into a boot loop where it comes back up for 20 seconds, then goes back down again. I can't RDP to it given the short window. Restoring the root drive back to the December 1 version works, but with auto-updates installed, I am afraid it will go down again. I am disabling auto updates for now.
Here is a screen shot of the 12/1 drive version and "Check for Updates" ran. There are 2 "important" which I assume are the only ones that are auto-installed, and 3 option.
Important: https://imgur.com/a/Nw8cmDY
Optional: https://imgur.com/a/jK9P3V5