How to Enable Tamper Protection in Windows 11

This guide explains how to use Tamper Protection to keep your Microsoft Defender antivirus settings safe on Windows 11.

Tamper Protection in Windows Security stops harmful apps from changing your Microsoft Defender Antivirus settings. This includes things like real-time protection and cloud-delivered protection.

Why use Tamper Protection?

Malicious software often tries to turn off your antivirus to hide itself. Tamper Protection acts like a lock. It makes sure that only you, the administrator, can change these important security settings.

What happens when done?

Once enabled, your antivirus settings will be locked. Even if a bad app tries to change them using Registry Editor, Windows commands or PowerShell, or Local Group Policy, the system will block the attempt.

Note: This feature does not stop third-party antivirus programs from working. However, for the best security, you should always keep it turned on. If you turn it off, you will see a yellow warning in the Windows Security app.

How to change Tamper Protection settings

You must have administrator privileges to follow these steps.

1. Click the search box on your taskbar and type Windows Security. Select it from the list.

2. Click on Virus & threat protection.

3. Under the Virus & threat protection settings section, click Manage settings.

4. Use the switch to turn Tamper Protection to On or Off.

That is all there is to it! Your settings are now protected.

Summary

Tamper Protection is a key security feature in Windows 11. It is turned on by default to prevent unauthorized apps from disabling your antivirus. By keeping this feature active, you ensure your computer remains protected against security threats. If you ever need to check this setting, you can easily manage it through the Windows Security app.