Calendar Sharing Invite Requests fail with Outlook but not with OWA RRS feed

  • Question

  • Were having an issue with Exchange 2013 and Outlook 2010 and 2007.

    When using Outlook (2007 and 2010) were getting the following message when sending a calendar share invite:

    "Error while preparing to send sharing message"

    In OWA invites to share the calendar work fine. 

    After the invite is accepted all functionality appears to work as it should in both OWA and Outlook (2007 and 2010).  

    However in Outlook calendar share invites are failing.

    Tuesday, March 4, 2014 3:50 PM