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MasPAN74's avatar
MasPAN74
Brass Contributor
Sep 03, 2025

How to perform Windows Update for Exchange 2016 DAG Cluster

Hello,

 

I need to install windows server security update on Exchange 2016 DAG which require reboot the server.

 

I will install the updates on the first server Tuesday, and the seconde server on Wednesday.

 

I'm wondering if installing patches on separated days may impact Exchange services, also i need to know the steps to follow before restart each server after installing the patch.

2016

2 Replies

  • MasPAN74's avatar
    MasPAN74
    Brass Contributor
    Sep 09, 2025

    Hello Dan_Snape​ 

     

    Noted, Thank you.

     

    Here is an answer for the steps to follow for patching the server ( Not exchange)

     

    https://techcommunity.microsoft.com/discussions/SharePoint_General/how-to-perform-windows-update-for-exchange-2016-dag-cluster/4450575

  • Dan_Snape's avatar
    Dan_Snape
    Iron Contributor
    Sep 03, 2025

    Installing patches on separate days whould be fine. I wouldn't leave it weeks between getting the servers to the same level. Just put each server in maintenance mode prior to patching.

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