Exchange KB5063222

mara2021 1,181 Reputation points
2025-09-02T17:50:19.9566667+00:00

We are a hybrid environment. I have 2 exchange 2019 hybrid servers. One server has extended protection enabled, the other does not because of an on-premise application (will get rid of in a month or two). I installed KB5063222 on the server with extended protection. Install was fine. I want to install the CU on the server with EP disabled this weekend. My question, can I use Exchange2019-KB5063222-x64-en.exe with the do not enable parameter? Thanks.

Exchange | Hybrid management
0 comments No comments
{count} votes

Accepted answer
  1. Andy David - MVP 158.9K Reputation points MVP Volunteer Moderator
    2025-09-02T22:40:07.55+00:00

    Oh, I understand

    Install the update, then run:

    https://learn.microsoft.com/en-us/exchange/plan-and-deploy/post-installation-tasks/security-best-practices/exchange-extended-protection#disabling-extended-protection

    You can download the script here:

    https://microsoft.github.io/CSS-Exchange/Security/ExchangeExtendedProtectionManagement/

    Substitute your Exchange Server the for names in the example.

    I would reboot it again after that.

    .\ExchangeExtendedProtectionManagement.ps1 -DisableExtendedProtection -ExchangeServerNames ExchServer1, ExchServer2

    0 comments No comments

1 additional answer

Sort by: Most helpful
  1. Andy David - MVP 158.9K Reputation points MVP Volunteer Moderator
    2025-09-02T18:48:54.7766667+00:00

    Yes but you need to disable it during setup:

    https://learn.microsoft.com/en-us/exchange/plan-and-deploy/post-installation-tasks/security-best-practices/exchange-extended-protection?view=exchserver-2019#enabling-extended-protection-by-using-exchange-server-2019-cu14-or-later-installer

    <Virtual DVD drive letter>:\Setup.exe /IAcceptExchangeServerLicenseTerms_DiagnosticDataON /Mode:Upgrade /DoNotEnableEP


Your answer

Answers can be marked as Accepted Answers by the question author, which helps users to know the answer solved the author's problem.