How to Turn Off Windows Defender in Windows 10: 7 Steps May 21, 2022 · Go to the Windows button at the bottom left corner of the screen, search windows defender, click open. If that does not work, then try the following: Click the Windows button at the bottom left corner of the screen, search task manager, open task manager, click on the details tab, search for a process labeled "Windows defender" click on it, then click end …