Outlook exchange connected but not updating
This Exchange access may be locked down to only be allowed within your corporate network or VPN, which prevents the use of EWS by external applications like Jazz HR.
To test if EWS is accessible and configured, use the Microsoft Remote Connectivity Analyzer.
This functionality is available in Exchange implementations running version 2013-2016.
In the event that you encounter a Microsoft Exchange connector issue, your IT team may possibly have Exchange Web Services (EWS) disabled.
I had contact with a Twitter user on an issue with Outlook for Mac 2011 talking against Exchange Server 2007 on Small Business Server 2008.
When configuring a new account, Outlook for Mac reported “Account cannot be added.
However, items weren’t updated and contacts and calendar remained empty.
After trying and checking some things, I asked to turn on Outlook for Mac’s logging hoping to find something in the Exchange Web Services log (Outlook for Mac 2011 is EWS based).