Using classic Outlook for Windows in business environments
I have Office 2016 on one of my computers and 2019 on the other. Both had continued working until this morning, then neither one would sync with Gmail. (The email from Gmail did not explain that newer versions of Outlook would also quit syncing without 2-factor authentication.) I did the 2 simples steps of enabling 2 factor authentication and setting an app password. Sync with Gmail resumed immediately. I'm thankful for this community board which explained this simply. Previous information I had found online made it much more complicated.