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  2. Windows 11 - Wikipedia

    en.wikipedia.org/wiki/Windows_11

    Though a support document listed October 4, 2021, as the initial release date, [67] Microsoft officially released Windows 11 on October 5, 2021, [8] [68] as an opt-in, in-place upgrade through either the Windows 11 Installation Assistant application (which can perform the upgrade, or generate an ISO image or USB install media), or via Windows ...

  3. 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.

  4. Windows 11 version history - Wikipedia

    en.wikipedia.org/wiki/Windows_11_version_history

    Windows 11 is a major release of the Windows NT operating system developed by Microsoft that was released in October 2021. Starting with Windows 10, Microsoft described Windows as an "operating system as a service" that would receive ongoing updates to its features and functionality, augmented with the ability for enterprise environments to receive non-critical updates at a slower pace or use ...

  5. Windows Update - Wikipedia

    en.wikipedia.org/wiki/Windows_Update

    Windows 95 and Windows NT 4.0 were retroactively given the ability to access the Windows Update website and download updates designed for those operating systems, starting with the release of Internet Explorer 4. The initial focus of Windows Update was free add-ons and new technologies for Windows.

  6. Malicious Software Removal Tool - Wikipedia

    en.wikipedia.org/wiki/Malicious_Software_Removal...

    Since support for Windows 2000 ended on July 13, 2010, Microsoft stopped distributing the tool to Windows 2000 users via Windows Update. The last version of the tool that could run on Windows 2000 was 4.20, released on May 14, 2013. Starting with version 5.1, released on June 11, 2013, support for Windows 2000 was dropped altogether.

  7. Microsoft SmartScreen - Wikipedia

    en.wikipedia.org/wiki/Microsoft_SmartScreen

    SmartScreen (officially called Windows SmartScreen, Windows Defender SmartScreen and SmartScreen Filter in different places) is a cloud-based anti-phishing and anti-malware component included in several Microsoft products: All versions of the Microsoft Windows operating system since Windows 8; Web browsers Internet Explorer and Microsoft Edge