Split from this thread.

Running the latest public release version of Yosemite (10.10.2 at this moment) and latest version of MS Office for Mac (Outlook 14.4.8) and this problem has not been fixed.  Disable App Nap also does not work. Seeing that I work for a very large company there is no option to disable EWS Digest Authentication at the Exchange server.  Based on this email thread this problem has existed for at least a year and Microsoft appears to have done nothing to fix it other than to inform customers to disable this or that?