Download Windows Defender For Windows 10 Upd < TRUSTED ✭ >

Windows Defender may automatically disable itself if it detects another antivirus program (like Norton, McAfee, or Avast) is installed. To use Defender, you must completely the third-party software. 3. Repair or Reset Windows Security

If you want to start using the built-in protection, follow these steps: download windows defender for windows 10

Unlike third-party antivirus software (like Norton, McAfee, or Malwarebytes), Microsoft Defender Antivirus is . It installs automatically with the operating system and runs quietly in the background. Windows Defender may automatically disable itself if it