Cannot create Shared Mailbox

I cannot create a shared mailbox, everything else works fine.  I get the following error message The call to 'System.ServiceModel.Description.ServiceEndpoint' failed. Error details: The socket connection was aborted. This could be caused by an error processing your message or a receive timeout being exceeded by the remote host, or an underlying network resource issue. Local socket timeout was '00:10:00'. --> An existing connection was forcibly closed by the remote host.

Did something change at Microsoft or is a known issue that they are working on?