Hi
we see a similar issue,
1.ESET is stuck on update
2.The server is partly unresponsive and user's who attempts to logout is stuck on: Please Wait for the system Event Notification Service
so between the 26 and today there must have been a bad definition/module release.
i have a server where i can recreate the issue where the ESET update is stuck again after a hard reboot.
update seems to have stopped here on some servers:
2019-10-26T12:00:15Z 09e5a745-679c-4215-90be-6b4c212bcf4e,efsw,211,7.0.12016.0,GA,biz paid(3),6.3.9600 SP 0.0 NT,NB_NO,LicenseChange