Login to Outlook 2016 App with 365 account on Windows 10

Login to Outlook 2016 App with 365 account on Windows 10 Hi, I’m using Outlook app on Windows 10, I used to be logged in with my Office 365 account, but a while ago I noticed that there is a signin button and when you click on it it asks you to setup an email account. It’s the same for my collegues.

https://techcommunity.microsoft.com/discussions/outlookgeneral/login-to-outlook-2016-app-with-365-account-on-windows-10/4025852