Outlook 2016 connected to exchange but not updating
Office 365 account has read and manage (plus send email from and on behalf) permissions to another mailbox.
I've setup the office 365 account in outlook 2016 using autodiscover which all works ok.
It may fix some issues that other steps have not solved.
To repair the install follow these steps: When your computer is back up and running, Open Outlook and see if it connects.
Another thing to try if you’re having Outlook connectivity issues is to try to repair the Microsoft Office install.
Usually you can ask your IT admin to help you out, but what do you do when you’re at home and can’t ask for help fixing your Outlook connectivity issues? Step two: Just try a few troubleshooting tricks on your own and see if you can get Outlook to connect to the Exchange Server.
Sometimes it’s something simple that can throw off Outlook.
If for some reason you find that it is still not connecting, it may be a more complex issue that these troubleshooting tips cannot solve.
This may require that you call an IT professional for help.