- The Cumulative Update 2 package can be used to perform a new installation, or to upgrade an existing Exchange Server 2013 installation to Cumulative Update 2.
- You do not need to install Cumulative Update 1 for Exchange Server 2013 when you are installing Cumulative Update 2.
For more information about coexistence of Exchange 2013 and earlier versions of Exchange Server, see Exchange 2013 System Requirements.
For more information about other Exchange updates, see Exchange Server Updates: build numbers and release dates.
PrerequisitesExchange Server 2013 setup will identify any missing prerequisites.
Restart requirementYou have to restart the computer after you apply this cumulative update package.
Registry informationYou do not have to make any changes to the registry after you apply this cumulative update package.
Removal informationAfter you install this cumulative update package, you cannot uninstall the cumulative update package to revert to an earlier version of Exchange 2013. If you uninstall this cumulative update package, Exchange 2013 is removed from the server.
Article ID: 2859928 - Last Review: Dec 10, 2015 - Revision: 1