Microsoft has released Security Updates (SUs) for vulnerabilities found in:
Exchange Server 2013
Exchange Server 2016
Exchange Server 2019
SUs are available in a self-extracting auto-elev...
Updated Mar 03, 2023
Version 13.0
Blog Post
I have the exact same questions as MariusNeuhaus, LukasSMSFT
I applied the fix, but I am still getting reports of applications not being able to use EWS correctly.
This is the error I get on all but the 1st Exchange server:
[PS] C:\Windows\system32>New-SettingOverride -Name "Adding learning location ClientExtensionCollectionFormatter" -Server OURSERVERNAME -Component Data -Section DeserializationBinderSettings -Parameters @("LearningLocations=ClientExtensionCollectionFormatter") -Reason "Deserialization failed"
Active Directory operation failed on OURSERVERNAME. The object 'CN=Adding learning location ClientExtensionCollectionFormatter,CN=Setting Overrides,CN=Global Settings,CN=EXCON1,CN=Microsoft Exchange,CN=Services,CN=Configuration,DC=DOMAN FQDN' already exists.
+ CategoryInfo : NotSpecified: (:) [New-SettingOverride], ADObjectAlreadyExistsException
+ FullyQualifiedErrorId : [Server=OURSERVERNAME,RequestId=f9142b67-74d5-4be3-b406-aae663ddef2e,TimeStamp=17-2-2023 09:26:48] [FailureCategory=Cmdlet-ADObjectAlreadyExistsException] BBFA1ADA,Microsoft.Exchange.Management.SystemConfigurationTasks.ConfigurationSettings.NewSettingOverride
+ PSComputerName : OURSERVERNAME.FQDN