How to open the built-in anti-virus software on Windows 10 system

We often encounter various virus files, so anti-virus software is one of the necessary software on the computer. However, when you are entangled in the use of 360 or Kingsoft Internet Security, Xiaobian wants to tell you that there is anti-virus software in Win10, how to open it?
Win10 comes with anti-virus software open method /step
1. Open the win10 system desktop in the lower left corner of the "Start" menu, click "All Programs", click on the "windows system" & rdquo; . As shown below.

2. Then click on "Windows defender".

3. This will open win10's own anti-virus software windows defender, scan options select "Quick scan", click “ scan now & rdquo;.

4. You can see the scan progress bar. As shown below.