I'm in the process of migrating user mailboxes from Exchange 2007 to Exchange 2013
It seems that many of the users (not all) are having problems seeing free/busy once they have been migrated. If we remove the Outlook profile and recreate it, all is good. Problem is that this is happening to more and more people. Everyone is on Outlook 2010
Test-OutlookWebServices -ClientAccessServer Ex2013 -identity MyName -MailboxCredential $cred Results in:
Autodiscover: Outlook Provider Failure
Exchange Web Services Failure
Availability Service Skipped
Offline Address Book Failure
The same if I run that command against the Exchange 2007 server.
What am I doing wrong?