Outlook on computer still not able to connect with outlook.com

Hi

Apparently this was resolved a few days ago, but I am still having issues. I enter the app password into the Windows Security dialogue box, then it immediately pops back up again. I attempt to use the Contact - Microsoft Support page, and after I enter my problem, get this message: 

'At least one of your devices is missing important updates. Before troubleshooting, use Windows Update to install the latest updates to see if this resolves the problem.

DESKTOP-LN8MISI
0000000000000000
Update recommended'

so I then attempt to do updates, but get the message: 'We couldn't connect to the update service. We'll try again later, or you can check now. If it still doesn't work, make sure you're connected to the Internet.'

Help!