For Windows 11, you can click Start > Settings > Windows Update > Check for updates.For Windows 10, you can click Start > Settings > Update & Security > Windows Update > Check for updates.If you can’t find Windows Defender on your computer, you can update Windows 11/10 to the latest version. Windows Defender is included in Windows 10/11 system and is not available for a standalone download now. Windows Defender Download for Windows 10/11
Windows Defender is also called Windows Security, Microsoft Defender, Windows Defender Antivirus, or Microsoft Defender Antivirus. Unlike other third-party antivirus software, Windows Defender doesn’t require additional download and installation. It is an anti-malware component of Microsoft Windows. Windows Defender is a free program included in Windows 10/11 system that helps protect your computer against security threats like malware, spyware, virus, etc. This MiniTool post explains how to open and use Windows Defender in Windows 10/11. It runs automatically and can be accessed and set easily. Windows Security, a built-in Windows defense tool, works well in protecting computers away from virus and malware attacks.