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OlevoFlag for Australia

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How do you upgrade Exchange 2013 SP1 server with the Cumulative Update 10 (CU10)?

Hi there,

We need to upgrade our Exchange 2013 SP1 server with the Cumulative Update 10 (CU10). From what I can see, we don’t need to install CU1 or a later cumulative update for Exchange Server 2013 when you install Cumulative Update 10. Also, there are no way to uninstall CU10 from the Exchange 2013. If you uninstall this cumulative update package, Exchange Server 2013 is removed from the server.

https://support.microsoft.com/en-us/kb/3078678

I’m nervous about upgrading to CU10 as I don’t have a test environment to try it in beforehand.

Already have downloaded Exchange2013-x64-cu10.exe (1.6GB) and I’m guessing that I need to download  Exchange Server 2013 CU10 UM Language Packs from:

http://www.microsoft.com/en-us/download/details.aspx?id=49045

Do I need to upgrade the Active Directory (Schema, Configuration and Domain) to the CU10 level by using the following commands? Or, CU10 upgrade will do it for me anyway?

Setup.exe /prepareSchema /IAcceptExchangeServerLicenseTerms
Setup.exe /prepareAD /IAcceptExchangeServerLicenseTerms
Setup.exe /prepareDomain /IAcceptExchangeServerLicenseTerms


Would you recommend to upgrade Exchange 2013 server is to use the unattended setup, or GUI setup is quite OK to run too?

Setup.exe /mode:upgrade /IAcceptExchangeServerLicenseTerms

What if (I hope not) CU10 upgrade will fail for some unexpected reason and I need to recover everything back (how it was before the CU10 upgrade)?! Our Ex2013 is virtual (hyper-v) , so I guess I could recover VM from the backup, but will I need to downgrade Active Directory (Schema, Configuration and Domain) to the previous version?

Any advice and help highly appreciated. Thanks.
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Mohammad Mahboob Rahmati

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