Microsoft accounts:

One email address to sign in everywhere

A Microsoft account is an email address and password that you use to sign in to Windows. It's free and easy to set up, and you can do so with any email address you choose, or get a new email address. (For example, you can use an Outlook.com, Gmail, or Yahoo! address for your Microsoft account.)

When you sign in to your PC or device with a Microsoft account, you can get apps from the Windows Store, back up all your important data and files using free cloud storage, and keep all your favorite stuff—devices, photos, friends, games, settings, music, and so on—up to date and in sync.

If more than one person uses your PC, each person should have their own account. They can sign in and personalize the PC with their own background colors, favorite apps, account picture, a separate email inbox, and more. If you have kids, you can also set up a child's account with extra security monitoring measures—with or without email—so that your kids see only what you want them to see on the PC.

If you’ve used Microsoft services in the past—like Xbox, Hotmail, Outlook.com, OneDrive, Messenger, Skype, or Windows Phone—you already have a Microsoft account (it's the email address you use to sign in). If you can't remember the email address you used with those services, that's okay—you can sign up for a new, free email address.

To check whether you're signed in with a Microsoft account

Swipe in from the right edge of the screen, tap Settings, and then tap Change PC settings.
(If you're using a mouse, point to the lower-right corner of the screen, move the mouse pointer up, click Settings, and then click Change PC settings.)
Tap or click Accounts, and then tap or click Your account.

If you're already signed in with a Microsoft account, your name and email address appear above your account picture.

If you're signed in with a local account, you'll see the words Local Account below your name, along with the Connect to a Microsoft account link.

Signing in with a Microsoft account

If you're signed in to your PC with a local account, there are several ways you can switch to a Microsoft account on your PC. Swipe in from the right edge of the screen, tap Settings, and then tap Change PC settings. (If you're using a mouse, point to the lower-right corner of the screen, move the mouse pointer up, click Settings, and then click Change PC settings.) Tap or click Accounts, tap or click Your account, and then tap or click Connect to a Microsoft account. You might be asked to verify your current password. Then, choose one of the following:
Option 1: Connect to an existing Microsoft account

Even if you’re not signed in to your PC with a Microsoft account, you might already have one if you use other Microsoft services like Xbox, Hotmail, Outlook.com, or Skype. Your Microsoft account is the email address you use to sign in to those services.

Enter the email address and password you use to sign in to other Microsoft services, tap or click Next, and follow the instructions.
Option 2: Sign up with the email address you use most often

If you haven’t used Microsoft services in the past, you can use any email address you want to sign up for a new Microsoft account, including addresses from Outlook.com, Yahoo! or Gmail. To use your favorite email address:

Enter the email address you want to use, and then tap or click Create a new account.

Follow the instructions to fill out your personal and security info, and you're all set.
Option 3: Get a new email address

If you want to start fresh and get a brand-new email address to use as your Microsoft account, you can get one for free:

Tap or click Create a new account.

Follow the instructions to fill out your personal and security info for a new email address, and you're ready to go.