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Barry Fields
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updating exchange server 2013

I have just inherited an Exchange server 2013 installation that hasn't been patched for sometime it is sitting at CU13 I want to bring it up to the latest, CU21 how do I go about it

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Barry Fields

8/22/2022 - Mon
Jose Gabriel Ortega Castro

Basically, that's a new install of Exchange just do a backup, warn your users and proceed.

Here's the detailed about the CU21 what it needs

Danilo Andrade

It is a fairly simple process. You can follow this article if you are looking for some sort of step-by-step guide:

I personally like to do it all from the GUI by running the executable, but you can do it all from CMD. Just make sure you have a good backup of the server, and after the upgrade is done make sure to test connectivity (autodiscover) and check if your valid SSL certificate is still applied.
Hani M .S. Al-habshi

1-Download new CU
2-install new CU.exe
Your help has saved me hundreds of hours of internet surfing.
Barry Fields

I do not have to do CU's incrementally, just jump to CU21?
Danilo Andrade

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Barry Fields

Thank you