Greetings -

We've been seeing an issue for - oh, perhaps a third or so of our users. The issue is that Outlook will fail to get new mail from the exchange server, when the Mac has woken from sleep. Sending seems unaffected. Eventually - after a variable (but generally long) amount of time - it will finally pull new mail.

A workaround seems to be to quit Outlook, then relaunch it - that kicks it back into retrieving new mail. The behavior can't always be reproduced on demand. It seems to happen more frequently to users with a larger number of emails in their inbox (many well past the recommended 5k limit). Some get it infrequently - say, once a week or less - others have it happen nearly every time the mac goes to sleep. It appears to happen more often when the mac has been sleeping overnight, over lunch, or otherwise sleeping for a more extended time. Users are able to confirm new emails are on the server via Phones / OWA.

It appears to have started an update or two ago for Outlook - at the time I first started tracking it, all users were using Outlook 2011 14.4.3, but now many are updated to 14.4.4 (with no change). Mac OS is typically 10.9.4 or 10.9.5, but at least one user is still using 10.8.5. Setting app nap off had no effect.

I tried enabling logging on my own Outlook, but I've only experienced it once or twice. The one time it did happen, I was unable to spot any unusual errors in the log (and now the logs from that event are not available). We are connecting to Exchange 2010 hosted by a third party (Intermedia). The Remote Connectivity Manager shows everything being OK.

Is this happening to anyone else? I asked on another list (MacEnterprise) and a few other places were seeing similar issues. Is anyone aware of a fix, or if MS is aware of the issue?

Thanks.