Running Exchange 2013 CU3 with about 120 mailboxes on a Windows 2012 VM.
I cannot reach https://CAS/OAB
- I get a 403 Forbidden error; when Outlook tries to download, I get an error saying 'a file was not found' with a generic error code.
I verified permissions on the OAB directory and Authenticated Users have the appropriate ones.
I can rule out generation problems as the XML file along with all the LZX data files seem to be generating properly.