: Select Virus & threat protection , then click Manage settings . Ensure Real-time protection is toggled to On . Common Issues and Fixes
If you cannot find Windows Defender on your taskbar, it may simply be disabled or running in the background. To access its settings:
Unlike third-party antivirus software, Microsoft Defender (formerly Windows Defender) is deeply integrated into the Windows 10 architecture. Because it is a system service, there is no standalone ".exe" installer for the core antivirus. Instead, Microsoft delivers all necessary protection updates and feature enhancements through Windows Update. How to Access and Enable It
You don't actually need to download Windows Defender for Windows 10 64-bit; it is a of the operating system that comes pre-installed and ready to use . Why You Can't "Download" It
: Go to Update & Security > Windows Security .
