Exchange Server CU19 not being detected as needed by windows update

Peter Benci 1 Reputation point
2021-03-08T12:55:46.287+00:00

I have 2 different environments running exchange server 2016.

One of them Running on Server 2012R2

the other running on Server 2019

The 2012R2 servers has Exchange 2016 CU1 installed and the windows update does say that i am up to date

The 2019 server has Exchange 2016 CU11 installed and the windows update does say that i am up to date

Both server have checked "deliver other MS products updates with windows update" which is the case how the above CUs were delivered and installed too.

Any ideas why according to Microsoft AUtomatic Update service i do not have to install the CUs?

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2 answers

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  1. Andy David - MVP 139.8K Reputation points MVP
    2021-03-08T13:17:45.04+00:00

    Because:

    2016 CU1 is so old, ( 5 years!) that it probably cant detect the requirement
    You need to get to that CU19 plus the security patch.

    Update it manually - immediately

    https://learn.microsoft.com/en-us/exchange/plan-and-deploy/prepare-ad-and-domains?view=exchserver-2016

    Run each step separately:
    Setup.exe /IAcceptExchangeServerLicenseTerms /PrepareSchema
    Setup.exe /IAcceptExchangeServerLicenseTerms /PrepareAD
    Setup.exe /IAcceptExchangeServerLicenseTerms /PrepareAllDomains

    Then install .net 4.8
    https://learn.microsoft.com/en-us/exchange/plan-and-deploy/supportability-matrix?view=exchserver-2019#microsoft-net-framework

    75410-image.png

    Then install CU19:
    CU19:
    https://www.microsoft.com/en-us/download/details.aspx?id=102532
    Then install the security patch:

    Critical Patch:
    https://www.microsoft.com/en-us/download/details.aspx?id=102772

    As for the other server, this is not supported:
    The 2019 server has Exchange 2016 CU11

    Exchange 2016 is not supported on Windows 2019. You will need to rebuild that server with a supported O/S

    https://learn.microsoft.com/en-us/exchange/plan-and-deploy/supportability-matrix?view=exchserver-2019#supported-operating-system-platforms

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  2. Eric Yin-MSFT 4,386 Reputation points
    2021-03-09T01:56:57.697+00:00

    Agree with Andy, both your servers need to update and the server running on window server 2019 has to be rebuilt.
    Keep your CU version up-to-date (or a bit later than newest) this time after you finish the updates.
    Be free to post any issues when updating.


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