Using classic Outlook for Windows in business environments
The issue is DEFINITELY NOT RESOLVED! MS jumped the gun again.
The issue most manifested when your client syncs with the server either as a push or at timed sync interval. This issue was fixed or largely improved in the last day or two.
However, if your client attempts to send an email, mark an email, change attribute on the email, move an email, or otherwise need to initiate a create or change request asynchronously to the server, then you will see the same error prompt. I can literally reproduce this on command.
Therefore, the issue is not fully resolved as MS claims.
Just tried to access my hotmail on Outlook, and I'm facing the same issue. Not sure why Microsoft suggested that this issue has been resolved here: https://support.microsoft.com/en-us/office/outlook-and-other-apps-are-unable-to-connect-to-outlook-com-f4202ebf-89c6-4a8a-bec3-3d60cf7deaef. The issue is far from resolved.