Sign in to Office

Depending on the account you use to sign in to 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.

Tip: Are you looking to set up email? If so, see Outlook help.

If you use Office 365, but aren't sure which account to sign in with, see Where to sign in to Office 365.

Select what you want to do:

Sign in to Office 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.

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Use Office Online with your Microsoft account
  • To sign in to Office Online, go to, click a tile for any Office application or use the app launcher App launcher button , and follow the prompts.

    Click an app tile
  • If you don’t already have a Microsoft account, click any tile, and then click Sign up for a new account.

  • To sign out or switch accounts while using an Office Online app on, click Sign out. If you want to use a different account, sign back in with the account you want to use. Depending on the app you're using, the Sign out link might be in the upper right corner on the navigation bar, or under the name you're signed in with.

Learn more about using Office Online at Get started at

Sign in to Office with the work or school account you use with Office 365

If your work or school uses Office 365, watch a video about signing in and getting started with Office 365 at Get started with Office 365 for business.

Use Office Online with your work or school account
  • To sign in to Office Online, go to 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 App launcher button , click a tile for any Office application, and follow the prompts.

    Select an Office Online app

Sign in to an Office desktop application

  • If you have the current version of Office, open any Office application and, in the top right corner, click Sign in. If you see the name you used for your Microsoft account, you're already signed in.

    Tip: Can't find your desktop applications? See, Find Office applications in Windows 10, Windows 8, or Windows 7.

  • Type the email address and password you use with Office.

Note: Not sure where you should save your file? See Save a file.

Which account should I use while I'm using an Office application?

Since you may have two kinds of Microsoft accounts, like a personal Microsoft account accounts you created 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.

Switch Account

Add an account to Outlook

If you want to add your Microsoft account or another type of account to the desktop version of Outlook, see Set up email in Outlook for Windows or Set up an email account in Outlook 2016 for Mac.

Sign out of an Office desktop application

  1. In the Office application, select File > Account.

  2. Under User Information select, Sign out.

See Also

Microsoft account FAQ

Get started at

How to sign in and create a Microsoft account

Where to sign in to Office 365

Sign in to My Account to install and manage Office or your Office 365 subscription

Office 2013 Quick Start Guides

Office 2016 for Mac Quick Start Guides

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