Popular support topics for personal and family
Installing Microsoft 365
Download and install or reinstall Microsoft 365 or Office 2019 on a PC or Mac.
Payment and billing
Manage all your Microsoft subscriptions in one place, including your Microsoft 365 account.
Forgot username or password
Retrieve the account and password you use to sign in and install or reinstall Office.
Popular support topics for work
Popular support topics for education
Get started with Office 365 for free
Sign up for Office 365 for Education for free, for students and educators with a valid school email address.