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Help keep your PC trouble-free
with Windows Live OneCare

Get always-on security and performance for your computer--antivirus, anti-phishing, and antispyware protection, a two-way firewall, backup and restore, and regular tune-ups--all in one convenient package.

Subscribe now

Get always-on protection and maintenance for up to 3 PCs for just $49.95 (USD) * a year.

Subscribe now.
Activate a product key

Do you have a store-bought product key?

You can activate it here.
Add another PC

Already a subscriber?

Learn how to add another computer to your subscription here.
Purchase Online Backup for photos

Keep your memories safe. Add online backup for photos to your OneCare subscription.

Add 50 gigabytes of online backup for photos: $50.00 (USD).

* Final price will be confirmed at the point of purchase based on your country location/currency and may differ from the price that appears here.

Read the Windows Live OneCare system requirements.

Before installing OneCare, make sure to uninstall any other antivirus or firewall programs currently on your computer. Learn more.
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