On July 12th, we announced that Exchange Server 2013 RTM CU2 contained an issue that could result in the loss of public folder permissions when the public folder mailbox is moved between Exchange 2013 databases. Initially, we indicated that an interim update (IU) would be available via Microsoft Support to resolve this issue. However, after receiving your feedback, we decided to generate a new build of Exchange 2013 RTM CU2 that includes the fix for the issue.
The new build number of Exchange 2013 RTM CU2 is 15.0.712.24. You can download the new build from the Download Center.
As always, we recommend you test updates in a lab environment that closely mirrors your production environment prior to deploying in your production environment.
If you have not deployed Exchange 2013 RTM CU2, you can follow the steps outlined in the Upgrading/Deploying Cumulative Update 2 section in the Exchange 2013 RTM CU2 announcement article.
If you have already installed Exchange 2013 RTM CU2 (712.22), you can simply execute setup.exe /m:upgrade /IAcceptExchangeServerLicenseTerms from a command line to upgrade your servers to the 712.24 build; alternatively you can upgrade via the setup user interface. Attempting to uninstall the 712.22 build will result in the complete uninstall of the server and is not recommended.
Important: Regardless of whether you are using modern public folders, we strongly recommend upgrading to this build of Exchange 2013 RTM CU2. Any security updates released for CU2 will be dependent on this build.
We deeply regret the impact this updated release has on our customers and as always, we continue to identify ways to better serve your needs through our regular servicing releases.
Ross Smith IV
Principal Program Manager
Exchange Customer Experience
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