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Exchange Team Blog
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Released: November 2023 Exchange Server Security Updates

The_Exchange_Team's avatar
The_Exchange_Team
Platinum Contributor
Nov 14, 2023
Microsoft has released Security Updates (SUs) for vulnerabilities found in: Exchange Server 2019 Exchange Server 2016 SUs are available for the following specific versions of Exchange Serve...
Updated Nov 27, 2023
Version 8.0
announcements
exchange 2016
exchange 2019
on premises
security
Nino_Bilic's avatar
Nino_Bilic
Icon for Microsoft rankMicrosoft
Nov 17, 2023

Pankaj_Messaging_Specialist I don't understand: are you saying this error happened after Nov update was installed?

There CAN be issues with scripts (or piped cmdlets) that are ran on management only machines AFTER the Nov 2023 SU is installed, as per the Known Issues section in this blog post. I would not expect an issue to have the symptom that you have pasted, though: instead, what could happen is if a piped cmdlet is used (either interactively or inside of the script) - you could get a deserialization error.

The workaround for that, if you run into it, is to run the script on the mailbox server. We will release an update for this in coming months so scripts will again work from management tools only machines / workstations.