Support ended for Windows XP on April 8, 2014. Microsoft will no longer provide security updates for Windows XP to help protect your PC against malware. Microsoft has also stopped providing Microsoft Security Essentials for download on Windows XP.
We strongly recommend that you complete your migration to a supported operating system as soon as possible so that you can receive regular security updates to help protect your computer from malicious attacks.
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Microsoft Security Essentials License Agreement
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