I've just found that Microsoft O365 Pro Plus update version 2002 as per yesterday 2/25/20 blocks Quickbooks desktop from sending emails.  This is true for both QB 2018 + latest 2020.

After the latest update the error message is;

'Outlook cannot log on Verify you are connected to the network and are using the proper server and mailbox name. Then Microsoft Exchange information service in your profile is missing required information. Modify your profile to ensure that you are using the correct Microsoft Exchange information service.'

I've tried a bunch of things, repairs, reinstall of both QB + O365 but error is the same. Who will fix; Intuit or Microsoft?