Exchange Server 2016 CU18

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Exchange Server 2016 CU18

vallee2018 331

Hello,

I currently have Exchange Server 2016 CU14 build 15.1.1847.3 installed. I would like to install the Exchange Server 2016 CU18 to upgrade the existing exchange server installation. Based on what I am reading, I believe I can go directly from CU14 to CU18. Is this correct?

I also wanted to confirm that installing the updated CU version, that this doesn’t change any configuration or settings in the exchange server environment. Since this is the full version of exchange that comes with the cumulative updates I just wanted to be sure that existing settings would remain unchanged from an administrative perspective.

Thanks,

Roger

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Answer 1

Andy David - MVP 160.3K MVP Volunteer Moderator

Yes you can do that, go straight to CU18

Follow this and break out each step even if you are single domain/AD forest
https://learn.microsoft.com/en-us/exchange/plan-and-deploy/prepare-ad-and-domains?view=exchserver-2019

Then follow:
https://learn.microsoft.com/en-us/exchange/plan-and-deploy/install-cumulative-updates?view=exchserver-2019

NOTE:

Any customized Exchange or Internet Information Server (IIS) settings that you made in Exchange XML application configuration files on the Exchange server (for example, web.config files or the EdgeTransport.exe.config file) will be overwritten when you install an Exchange CU. Be sure save this information so you can easily re-apply the settings after the install. After you install the Exchange CU, you need to re-configure these settings.

vallee2018 331 Reputation points

2020-12-10T17:06:28.383+00:00

Hello, Andy,

Thank you. The first link appears to be what would be run if installing exchange for the first time. I did this when I first installed exchange server 2016 in 2019. I did see the information in the second link earlier and will plan to follow that.

It has been a few years since I installed a CU in a previous assignment and just remember following the steps similar to the second link, (https://learn.microsoft.com/en-us/exchange/plan-and-deploy/install-cumulative-updates?view=exchserver-2019) not going through the steps again as in the first link: https://learn.microsoft.com/en-us/exchange/plan-and-deploy/prepare-ad-and-domains?view=exchserver-2019 .

Thanks,
Roger
Andy David - MVP 160.3K Reputation points MVP Volunteer Moderator

2020-12-10T17:34:41.743+00:00
Those prep steps are actually performed automatically each time you apply a CU. Its important to run each step individually however to ensure the correct perms get applied to the Exchange org

https://learn.microsoft.com/en-us/exchange/plan-and-deploy/prepare-ad-and-domains?view=exchserver-2019

E:\Setup.exe /IAcceptExchangeServerLicenseTerms /PrepareSchema E:\Setup.exe /IAcceptExchangeServerLicenseTerms /PrepareAD E:\Setup.exe /IAcceptExchangeServerLicenseTerms /PrepareAllDomains

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Exchange Server 2016 CU18

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