Microsoft has released security updates (SUs) for vulnerabilities found in:
Exchange Server 2013
Exchange Server 2016
Exchange Server 2019
IMPORTANT: Updates are released in a self-extrac...
Updated Aug 11, 2022
Version 8.0
Blog Post
LukasSMSFT - similar to above, installed the August Security Update (KB5015321) on all four (2013CU23) Exchange Servers. After installing it on the third and taking the fourth down for maintenance we get the error when trying to view the on-prem ediscovery cases page:
"Deserialization of type Microsoft.Exchange.Data.PropertyBag+ValuePair blocked due to NotInAllow at location MailboxDataStore"
No cases are shown in the window.
Removing the August Exchange SU from all four servers has resolved the issue, the on-prem ediscovery page now shows all the cases again.
One side note, we also rolled back the April Exchange SU - do we need to apply both April and August SU to resolve the issue?
Tracking reference number 2208120050001102