How to Turn Windows Defender On or Off

Authored by: Support.com Tech Pro Team

1. Introduction

Some programs will advise you to disable your antivirus while installing software. Maybe you installed or removed another antivirus program and need disable or enable your Windows defender. This guide will walk you though the steps needed to enable or disable your Windows Defender protection.

2. Enable or Disable Defender

Windows Defender will be on by default but if you want to make sure (or you want to turn it off) go ahead and follow these steps.

1. Click the Start button.
   

1. Click the Settings button on the left side of the start menu
   

1. Click Update and Security.
   

1. On the left side click Windows Defender.
   

1. Slide the button under Real-time Protection to On or Off.