New answers tagged exchange
It seems that it was a bug and that it will be fixed with OS X 10.11.0 and iOS 9. Since the first public beta (on both iOS and OS X) the problem disappeared (without any change on my side).
It is very possible that your company is running an Exchange Server that is not compatible with Outlook for Mac 2016. Check with your company's help desk to find out if this is indeed the issue and if so how you can reinstall Outlook 2011.
If your version is activated and all you are still experiencing that, I can suggest you to take a look at the credentials that you have for the account, the server info(under "Advanced...") and the ports. All could be found by selecting the Outlook, then from the menu you can choose Outlook > Preferences > Accounts > choose the desired account Also make ...
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