How to Turn On or Off Microsoft Defender Antivirus in Windows 11

Share

This post shows students and new users steps to disable or enable Microsoft Defender Antivirus in Windows 11. Microsoft Defender Antivirus is available in Windows 11 and is a major component of your next-generation protection in Microsoft Defender for Endpoint.

This protection is built into Windows and it works with Microsoft Defender Endpoint to provide protection on your device and in the cloud. Protection such as Controlled folder access, Real-time protection, Tamper protection, and Ransomware protection are included with Microsoft Security.

When you disable Microsoft Defender Antivirus, files are not scanned, and threats are not remediated. In general, Microsoft recommends that you do not disable or uninstall Microsoft Defender Antivirus.

To disable Microsoft Defender Antivirus, you must be signed in as administrator and Tamper Protection turned off.

How to disable or enable Microsoft Defender Antivirus in Windows 11

As mentioned above, when you disable Microsoft Defender Antivirus, files are not scanned, and threats are not remediated. In general, Microsoft recommends that you do not disable or uninstall Microsoft Defender Antivirus.

If you still want to disable Microsoft Defender Antivirus, use the steps below.

In Windows 11, open Local Group Policy Editor by clicking on the Start menu and searching for Edit group policy as highlighted below. Under Best match, select Edit group policy to launch Local Group Policy Editor.

windows 11 edit group policy

In the left pane of Local Group Policy Editor, expand the tree: 

Computer Configuration>Administrative Templates>Windows Components>Microsoft Defender Antivirus

In the Microsoft Defender Antivirus details pane on the right, local and double-click the setting Turn off Microsoft Defender Antivirus.

In the Turn off Microsoft Defender Antivirus setting window, set the option to Enabled.

Select OK.

Close Local Group Policy Editor.

If Microsoft Defender Antivirus is disabled and you want to enable it via the Local Group Policy Editor, then go to the policy path below:

Computer Configuration>Administrative Templates>Windows Component > Microsoft Defender Antivirus

Locate and double click on Turn off Microsoft Defender Antivirus settings, then set the option to Not configured.

That should do it!

Conclusion:

This post showed you how to turn on or off Microsoft Defender Antivirus protection in Windows 11. If you find any error above or have something to add, please use the comment form below.