

However, this program is no longer updated and is considered out-of-date and should not be used to protect your computer against viruses. Windows 3.11 did include a basic virus protection program ( msav). More information is available at Microsoft's website. It was discontinued on January 14, 2020, and replaced by Microsoft Defender in Windows 8.

MSE (Microsoft Security Essentials) was virus protection software for Windows 7 and 8.

For reliable virus protection integrated directly into the OS, keep Microsoft Defender enabled on your Windows 10 computer. It is updated as necessary on a weekly basis by Microsoft as part of Windows Update. Windows 10 includes Microsoft Defender, a robust and efficient virus protection system. Versions of Windows previous to Windows 7 did not provide virus protection as part of the operating system.
