Microsoft Windows Live OneCare Sign In

Welcome, Windows Live OneCare subscribers!

Here's the place to learn how to use Windows Live OneCare, update your account, and get help when you need it.

Get started!

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Get to know Windows Live OneCare
Find out how to make the most of the protection and maintenance features in Windows Live OneCare in our Getting Started Guide.

  • Tell us what you think
    Let us know about your experience with Windows Live OneCare. We want to know what you like about it, what you think could be improved, how you use it, as well as any questions or opinions you have about computer maintenance and protection.
  • Find help
    In our Help Center you can search or browse help topics, frequently asked questions, and more.

Manage your subscription

  • Update your account information
    Review charges associated with your Microsoft services, and view or update your account and billing information for these services.
  • Update your Windows Live™ ID profile information
    Need to change your name or e-mail address, or reset your password? You can do all three (and more) at Passport Member Services.
  • Reinstall Windows Live OneCare
    Already a Windows Live OneCare subscriber? You can reinstall Windows Live OneCare on the same computer (or install it on a new computer) by following your initial purchase route.
  • Renew your subscription
    Don't let your subscription run out - you can renew your Windows Live OneCare subscription here.

Note: You'll need to log in with the Windows Live™ ID you used when you first installed Windows Live OneCare.