There is a problem with your account

Thank you for this. All other solutions were extremely time consuming, and this problem is actually quite common. I think it has something to do with using Microsoft products on a non-Azure computer user account, when the Office 365 user is also an Azure user. You should be able to do that without issue, but I've run into this a lot. This seems to have solved the authentication issue. I should also mention, this computer had an old install of Office 2016 Home and Business installed previously.