Exchange 2019 Antimalware engine updates download but don't get applied

Got this event since the 8th of December on 2 Exchange 2016 and 2 Exchange 2019 Servers. Looks like a common problem with both download paths. No Updates since then. Engine : Microsoft LastChecked : 12.10.2021 11:42:51 +01:00 LastUpdated : 12.08.2021 01:13:24 +01:00 EngineVersion : 1.1.18700.4 SignatureVersion : 1.353.2243.0 SignatureDateTime : 12.07.2021 06:41:19 +01:00 UpdateVersion : 2112070009 UpdateStatus : UpdateAttemptFailed

14th of december: I opened a MS Ticket. Let's see..

I have done some research, here are many things cause this issue, you could use FPSDiag.exe (E:\Exchange Server\FIP-FS\bin) to generate a log to analyse this error.

In addition, I have found a similar thread and there are some discussions on this issue for your reference and hope it is helpful to you.

Related blog: Problem z aktualizacją Antimalware w Exchange 2013

good news: since this morning the updates are working again. Maybe because of my post on the exchange team blog or because of my MS Ticket. Look for yourself. Everythings fine :)