Hi,
I'm at the tail-end of an Exchange 2010 to Exchange 2013 migration for a customer and while "everything" looks like it's working users in Outlook 2007 & Outlook 2010 are getting an Authentication Popup when trying to access shared calendars that they previously had access to. All the original permissions that still there but don't seem to be working properly. The only way to correct the issue is to remove the permissions in the Exchange Shell and re-add them.
All users have been migrated to one of the Exchange 2013 Mailbox servers. - ~700
All Public Folders have been migrated to the "New Public Folders" on Exchange 2013 and are able to access them as before.
I'm not sure why the permissions aren't working. I am also trying to find a way to automate the fix if I have to reset/regrant the permissions to the calendars. I would really like to not have to a) do each calendar manually and b) have the users ask for and grant access again.
Does anyone have any ideas?
Thanks! Jim