When you get a new device and start up Windows 10 for the first time, the antivirus protection that comes installed with the device is your default security app. However, Windows Defender Antivirus is pre-installed and ready for you to use at any time.
If you want to use Windows Defender Antivirus, uninstall all of your other antivirus programs and Windows Defender Antivirus will automatically turn on. You may be asked to restart your device.
Article ID: 4028102 - Last Review: 2017, ഓഗ 1 - Revision: 1