Windows Defender is a free program that helps you stay productive by protecting your computer against pop-ups, slow performance and security threats caused by spyware ...

Protect against spyware and malware with Windows Defender in Windows 7. It also has simpler alerts, more options, and less impact on performance.

Oct 23, 2012 · Help and support for Microsoft Windows Defender. Top issues, error messages, and troubleshooting tips.

Learn more about how to install security software to help protect your computer from viruses and other security threats, and how to ensure your security software is ...

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Download Microsoft Windows Defender - Keep your PC as safe as possible

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Windows Defender, formerly known as Microsoft AntiSpyware, is a software product that helps combat malware. Windows Defender was initially an antispyware program ; it ...

Learn how Windows Defender helps protect your computer against spyware and other potentially unwanted software.