Sign in to Office
Depending on the account you use to sign in to the current version of Office or Office Online, you’ll be automatically signed in to Microsoft online services like OneDrive. By saving your files to OneDrive, you can work on them from almost anywhere and share them with anyone. Your files travel with you—even across different devices.
If you use Office 365, but aren't sure which account to sign in with, see Where to sign in to Office 365.
If you're signing in with a Microsoft account
If you have an Office 365 Home, Personal, or University subscription, watch this short video to learn more about how to use your Microsoft account to sign in.
Use Office Online with your Microsoft account
To sign in to Office Online, go to Office.com, click a tile for any Office application or use the app launcher , and follow the prompts.
If you don’t already have a Microsoft account, click any tile, and then click Sign up for a new account.
Want to learn more about using Office Online? See Get started at Office.com.
If you're signing in with the work or school account you use with Office 365
If your work or school uses Office 365 watch this video about signing in and getting started with Office 365.
Use Office Online with your work or school account
To sign in to Office Online, go to Office.com and sign in with the work or school account you use with Office 365. On the Office 365 home page or from the app launcher , click a tile for any Office application, and follow the prompts.
Want to learn more about using Office Online? See Working with Office Online using Office 365 for business.
Sign in to an Office desktop application
If you have the current version of Office (Office 365 Home, Personal, University, or Office 2013), open any Office application and, in the top right corner, click Sign in.
Type the email address and password you use with Office.
Which account should I use while I'm using an Office application?
Since you may have two kinds of Microsoft accounts: personal accounts you create, and accounts from your work or school that use Office 365, just sign into the account that has the Office files you want to work on.
To switch between accounts in an Office application, click your name in the top right corner and click Switch account. On Office.com, click Sign out, and then sign back in with the account you want to use.