Exchange 2013 RTM CU2 (KB2859928) updated release – fix public folders issue

Cumulative Update 2 for Exchange Server 2013 was re-released yesterday (07/29/2013)

New version of CU2 for Exchange 2013 RTM fixes a serious permission issue when moving modern public folders mailboxes around.


We wrote about this in article:

Exchange 2013 CU2 Issue – Public Folder Permissions Loss After PF Mailbox Move


Regardless of whether you are using modern public folders, we strongly recommend upgrading to this build of Exchange 2013 RTM CU2.


New CU2 has build number: 15.0.712.24 (KB2859928)

and can be downloaded from Microsoft Download Center:

 Cumulative Update 2 for Exchange Server 2013 (KB2859928)


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Exchange 2013 CU2 released (KB2859928)

Microsoft announced the release of Exchange 2013 CU2 on the Microsoft Exchange Team Blog.

Exchange 2013 Cumulative Update 2 can be downloaded here:

Cumulative Update 2 for Exchange Server 2013 (KB2859928)


After installation CU2 you will get version number: 15.0.712.22


CU2 contains a number of fixes as well as new/improved features, including:

  • Per-server database support increased back to 100
  • OWA Silent Redirection
  • Addition of the DAG Management service
  • Changes to Managed Availability
  • Improved PowerShell Help Updating
  • OWA Search improvements
  • Malware Filter Rules


Description of Cumulative Update 2 for Exchange 2013 you can find below:

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Exchange 2013 CU2 – mailbox databases limit changes

Administrators of Exchange 2010 who have more than 50 databases can now be happy.

Exchange 2013 enterprise has limit of 50 databases per server, but not with CU2 !!!!

Exchange Team has released that many of us have Exchange 2010 environments with more than 50 databases. And during migration to Exchange 2013 enterprise it could be a problem to decrease number of mailbox databases to 50 per server.

So when you install CU2 for Microsoft Exchange 2013, mailbox databases limit for enterprise version will be increased to 100.

CU2 is expected later this summer.

CU2 won’t change number of databases pers server for standard edition, and it will be 5 per server.

More information you can find on Exchange Team Blog:

Per-Server Database Limits Explained