November patch updates to Windows Server 2008r2, 2012, 2012r2, 2016, and 2019 will cause a memory leak in the LSASS on Domain Controllers, causing them to freeze and have to be hard restarted. This is after the March patch LSASS disaster causing Domain Controller reboots. There is a temporary workaround in the BleepingComputer article link, with Microsoft promising a "fix" in the near future. We're all simply Microsoft's QA test pool now. Where's my eye roll emoji when I need it???
https://www.bleepingcomputer.com/news/microsoft/new-windows-server-updates-cause-domain-controller-freezes-restarts/
https://www.bleepingcomputer.com/news/microsoft/new-windows-server-updates-cause-domain-controller-freezes-restarts/