Support for Windows Vista Service Pack 1 (SP1) ended on July 12, 2011.
Support for Windows XP with Service Pack 2 (SP2) ended on July 13, 2010.*
If you're running one of these versions after support ends, you won't get security updates for Windows.
Moving to Windows 7 helps you simplify everyday tasks, helps make your PC safer, and makes new things possible.
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If you're running Windows XP with Service Pack 2 (SP2) and you're not ready to upgrade to Windows 7, you should install Windows XP Service Pack 3 (SP3), a free update.
Windows XP SP3 includes all previously released updates and a small number of new updates. It won't significantly change the Windows XP experience.
* Note: There's no SP3 for the 64-bit version of Windows XP. If you’re running the 64-bit version of Windows XP with SP2, you have the latest service pack and will continue to be eligible for support and receive updates until April 8, 2014.
Install an antivirus program like Microsoft Security Essentials to help defend your computer against viruses, spyware, and other malicious software.
See other Windows security software providers
Keep Windows updated. To make sure that Windows receives periodic security updates, turn on Automatic Updates.
Get Internet Explorer 8. Download Internet Explorer 8 for improved protection against online threats.
Learn more at the Windows XP Security and Privacy webpage.
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Windows XP Solution Center
Windows Service Pack Center
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