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Exchange Team Blog inform about some issue when you install CU2 for Exchange 2013 and you use Modern Public Folders.
This issue can occur when you move public folder mailboxes.
When you move public folder mailbox it’s possible that you will lost permission structure on some public folders, specially:
- If you move (via New-MoveRequest) a secondary public folder (PF) mailbox, the permissions on any public folder (including well known folders) not stored in the secondary PF mailbox would be lost from the secondary PF mailbox and replaced by the default ACL. The original ACLs can be restored via a full synchronization event by executing Update-PublicFolderMailbox -InvokeSynchronizer <Public Folder Mailbox> -FullSync.
- If you move (via New-MoveRequest) the primary PF mailbox, the permissions on any public folder (including well known folders) not stored in that public folder mailbox are lost and replaced by the default ACL.
There is no solution right now.
But there is always some recommendation:
If you have already installed CU2 for Exchange 2013 and you are using Modern Public Folders in your environment, do not move public folder mailboxes, then you will not experience this issue.
If you are in the midst of a migration to Exchange 2013 and will not be deploying Modern Public Folders for some time, you can proceed with installing Exchange 2013 RTM CU2 (712.22). Once you are ready to deploy Modern Public Folders ensure you have deployed the soon-to-be-released Interim Update or the latest available Cumulative Update.