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PaulH1980
Copper Contributor
Sep 10, 2025

Hotfix update for 2016 CU23 HU18: (KB5066370) breaks OWA and leaves all services disabled

Has anyone else applied the latest hotfix?  First of all it tries to validate open files instead of just killing these processes as part of the update, then after rebooting all the services are left in a disabled state.  Then I discover it has broken IIS and OWA doesnt work.

 

We have had client issues all day in the office.  It looks like another update has been pushed out without sufficient testing.

 

Any help would be grateful at this point, I am looking to take 2 out of 4 servers offline.

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