Exchange 2016 ECP / Powershell Error after last CU update

Question

, HI,

yesterday, after installing the latest CU 2016 update CU23 Nov23SU 15.1.2507.35, we encountered some strange behavior with some Exchange Powershell commands:

for example: Get-ExchangeServer | Test-MAPIConnectivity

but if I run a single command, Get-ExchangeServer and Test-MAPIConnectivity, not in pipes, it works.

Furthermore, the script to move db between nodes, stops to work:

.\RedistributeActiveDatabases.ps1 -DagName "DAG" -BalanceDbsByActivationPreference -SkipMoveSuppressionCh
ecks
Cannot convert value "DAG" to type "Microsoft.Exchange.Data.Directory.SystemConfiguration.DatabaseAvailabilityGroup". Error: "Cannot convert the "DAG"
value of type "Deserialized.Microsoft.Exchange.Data.Directory.SystemConfiguration.DatabaseAvailabilityGroup" to type
"Microsoft.Exchange.Data.Directory.SystemConfiguration.DatabaseAvailabilityGroup"."
At C:\Program Files\Microsoft\Exchange Server\V15\scripts\RedistributeActiveDatabases.ps1:2815 char:3
+         $script:dag = Get-DatabaseAvailabilityGroup $DagName -Status
+         ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
    + CategoryInfo          : MetadataError: (:) [], ArgumentTransformationMetadataException
    + FullyQualifiedErrorId : RuntimeException

Log-Error : [09:07:47.004 UTC] Could not find DAG matching 'cartero-dag'!
At C:\Program Files\Microsoft\Exchange Server\V15\scripts\RedistributeActiveDatabases.ps1:2820 char:3
+         Log-Error ($RedistributeActiveDatabases_LocalizedStrings.res_ ...
+         ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
    + CategoryInfo          : NotSpecified: (:) [Write-Error], WriteErrorException
    + FullyQualifiedErrorId : Microsoft.PowerShell.Commands.WriteErrorException,Log-Error

Get-ExchangeServer | Test-MAPIConnectivity
The operation couldn't be performed because object 'XXXXXXX' couldn't be found on 'ADXXX.domain.com'.
    + CategoryInfo          : NotSpecified: (:) [Test-MAPIConnectivity], ManagementObjectNotFoundException
    + FullyQualifiedErrorId : [Server=XXXXX,RequestId=812991b5-efa7-4049-a31d-a989fa3456b6,TimeStamp=16/11/2023 08:53:21] [FailureCategory=Cmdlet-ManagementObjectNotFoun
   dException] 186247B,Microsoft.Exchange.Monitoring.TestMapiConnectivity
    + PSComputerName        : XXXXX.domain.com

The operation couldn't be performed because object 'XXXXX' couldn't be found on 'AD4XXX.domain.com'.
    + CategoryInfo          : NotSpecified: (:) [Test-MAPIConnectivity], ManagementObjectNotFoundException
    + FullyQualifiedErrorId : [Server=XXXXX,RequestId=812991b5-efa7-4049-a31d-a989fa3456b6,TimeStamp=16/11/2023 08:53:21] [FailureCategory=Cmdlet-ManagementObjectNotFoun
   dException] 915C3018,Microsoft.Exchange.Monitoring.TestMapiConnectivity
    + PSComputerName        : XXXXX.domain.com

Answer 1

Hi @Claudio Di Chiaro ,

Did you run the command or scripts on Management Tools only machines? If so, it appears that both the two issues have already been aware of, and fixes are currently being working on. For more information and the possible workaround for now, you can refer to the official links below:

• Released: November 2023 Exchange Server Security Updates
  
• Configure certificate signing of PowerShell serialization payloads in Exchange Server
  

You can keep checking back of the links above for any update.

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