Summary:
Teams is a part of Microsoft 365, so you need a Microsoft 365 app for business or an Enterprise license to use it. If you don't know what email you should use, contact your company's IT support.
Sign-in to Teams:
Start Teams.
In Windows, click Start
> Microsoft Teams.On Mac, go to the Applications folder and click Microsoft Teams.
On mobile, tap the Teams icon.
Sign in with your Microsoft 365 username and password.
