Mở Start. Mở Settings (Cài đặt). Nhấp vào Update & Security (Bảo mật & cập nhật). Nhấp vào Windows Security (Bảo mật Windows). Nhấp vào Virus & threat protection (Bảo vệ rủi ro & vi-rút). Nhấp vào Virus & threat protection settings (Cài đặt bảo vệ rủi ro & vi-rút). Tắt tính năng quét thời gian thực của Windows Defender.

I'm interested in that, but I only have a few mins. Can you give me at most the first 500 characters of a detailed explanation in English about that?
Click the Windows logo in the bottom-left corner of the screen. The Start menu will pop up. Click the gear-shaped Settings icon in the lower-left side of the Start menu. Doing so opens the Settings window. It's in the bottom row of Settings options. This tab is in the upper-left side of the window. It's the first option below the "Protection areas" heading near the top of the page. Doing so opens the Windows Defender window. You'll find this option in the middle of the page. Click the blue "On"