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2. Microsoft Defender Antivirus - Wikipedia

   en.wikipedia.org/wiki/Microsoft_Defender_Antivirus

   Microsoft Defender Antivirus (formerly Windows Defender) is an antivirus software component of Microsoft Windows. It was first released as a downloadable free anti-spyware program for Windows XP and was shipped with Windows Vista and Windows 7. It has evolved into a full antivirus program, replacing Microsoft Security Essentials in Windows 8 or ...

3. Microsoft Security Essentials - Wikipedia

   en.wikipedia.org/wiki/Microsoft_Security_Essentials

   Microsoft Security Essentials ( MSE) is a discontinued antivirus software (AV) product that provides protection against different types of malicious software, such as computer viruses, spyware, rootkits, and Trojan horses. Prior to version 4.5, MSE ran on Windows XP, Windows Vista, and Windows 7, but not on Windows 8 and later versions, which ...

4. Windows XP - Wikipedia

   en.wikipedia.org/wiki/Windows_XP

   Windows XP is a major release of Microsoft's Windows NT operating system. It was released to manufacturing on August 24, 2001, and later to retail on October 25, 2001. It is a direct upgrade to its predecessors, Windows 2000 for high-end and business users and Windows Me for home users, and is available for any devices running Windows NT 4.0, Windows 98, Windows 2000, or Windows Me that meet ...

5. Comparison of Windows Vista and Windows XP - Wikipedia

   en.wikipedia.org/wiki/Comparison_of_Windows...

   Windows XP Windows Vista Windows 7 Windows 8.x Windows 10 Windows 11 Windows Defender: Available as a free download: Yes Yes (added antivirus capabilities, available in older versions as the Microsoft Security Essentials download) Windows Firewall: Yes Windows Security Center: Yes (starting with SP2) Yes Yes (replaced by Action Center)

6. Windows Update - Wikipedia

   en.wikipedia.org/wiki/Windows_Update

   Windows Update is a Microsoft service for the Windows 9x and Windows NT families of the Microsoft Windows operating system, which automates downloading and installing Microsoft Windows software updates over the Internet. The service delivers software updates for Windows, as well as the various Microsoft antivirus products, including Windows ...

7. Windows Firewall - Wikipedia

   en.wikipedia.org/wiki/Windows_Firewall

   Windows Firewall (officially called Microsoft Defender Firewall in Windows 10 version 2004 and later) is a firewall component of Microsoft Windows. It was first included in Windows XP SP2 and Windows Server 2003 SP1. Before the release of Windows XP Service Pack 2, it was known as the " Internet Connection Firewall ."