Experts,

Hope you can shed some light on this issue, I've been banging my head against a wall.  We finished migrating our Exchange 2007 (single server) mailboxes to Exchange 2013 (single server), and the last step was to move public folders (essentially 100 or so shared calendars). 

Followed the procedures outlined on Technet, seems everything went well - but several of the calendars were missing their content.

Needing to get people back online w/ these calendars, I went through the procedure to rollback the migration to the 2007 public folders:

1. On the legacy Exchange server, run the following command to unlock the legacy Exchange public folders. This process may take several hours.

   Set-OrganizationConfig -PublicFoldersLockedForMigration:$False
   

2. On the Exchange 2013 server, run the following command to delete the public folder mailboxes.

   Get-Mailbox -PublicFolder | Where{$_.IsRootPublicFolderMailbox -eq $false} | Remove-Mailbox -PublicFolder -Force -Confirm:$false
   Get-Mailbox -PublicFolder | Remove-Mailbox -PublicFolder -Force -Confirm:$false
   
   
   
   

3. On the legacy Exchange server, run the following command to set the PublicFolderMigrationComplete flag to $false.

   Set-OrganizationConfig -PublicFolderMigrationComplete:$False

These steps went through successfully, however the Outlook clients (Outlook 2010) are NOT reconnecting to the public folder automatically - there is nothing listed in the public folder section of Outlook - I also do NOT see a connection to public folders in the Connection Status windows (CTRL+Right click on Outlook Icon)

I'm in a real pinch, and need to get these public folders showing back up on users Outlook.

Please help!!

Thanks in advance

Resolution: https://technet.microsoft.com/en-us/library/dn690134%28v=exchg.150%29.aspx

More Information: http://blogs.technet.com/b/exchange/archive/2014/11/07/on-premises-legacy-public-folder-coexistence-for-exchange-2013-cumulative-update-7-and-beyond.aspx