Windows 11

Best 6 Fixes for Tamper Protection Not Turning on in Windows 11

Repairing corrupted system files should help you fix this error

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Windows 11 has a security feature called Tamper Protection that helps shield your machine from unauthorized alterations, making it a crucial feature if you want to maintain your computer’s security. It is very important to keep this program on, however many users have complained that Tamper Protection is not turning on in Windows 11.

This problem could be caused by various factors such as malware attacks, corrupted system files, or incorrect settings. Regardless of the cause, the steps in this guide will help you fix this error and get your system working without any issues.

Before trying out any advanced fix, we recommend implementing these quick fixes.

  • A common reason why you could be having this error is as a result of a virus attack, and as such, we recommend carrying out an anti-virus scan using a reliable anti-virus program.
  • Next, check to see if your PC is up to date. An outdated computer could also be the reason why you are experiencing this error.

If the steps above do not fix this problem, try out our more comprehensive solutions below.

1. Use the Registry Editor to turn on Tamper Protection

The Registry Editor is a built-in Windows tool that allows you to make changes to the Windows Registry. You can use it to turn on the Tamper Protection by following the steps below.

  1. Hold the Windows + S keys to bring up the Search bar, type Registry Editor in the text field, then choose the required option.
  2. Choose Yes in the pop-up menu.
  3. Next, navigate to the path below.
    HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows Defender\Features
    Tamper Protection Not Turning On Windows 11
  4. Look for the TamperProtection DWORD, and double-click on it.
    Tamper Protection Not Turning On Windows 11
  5. Set the Value data to 5 and click OK.
  6. Finally, check if the Tamper Protection now works.

2. Remove any security policies in the Registry

The registry’s security policies are a set of options that regulate who can access the registry, including users and programs. These options can be used to audit registry activities, restrict access to specific registry values, and prevent users from changing them. This could also prevent you from turning on Tamper Protection. To fix this, remove the security policies.

  1. Hold the Windows + R keys simultaneously to open the Run dialogue, type regedit in the text field, and hit Enter.
    Tamper Protection Not Turning On Windows 11
  2. In the UAC prompt, click Yes.
  3. Next, go the the path below.
    Computer\HKEY_LOCAL_MACHINE\SOFTWARE\Policies\Microsoft\Windows Defender
    Tamper Protection Not Turning On Windows 11
  4. Right-click on the Windows Defender key, and click Delete.
  5. After doing this, check if you can now turn on Tamper Protection.

3. Repair corrupt system files

System files are crucial programs required for a computer system to function properly. They could be a component of the operating system itself, a third-party device driver, or some other resource. However, if these files are corrupt, you could run into various troubles, including issues with Tamper Protection. In this case, fixing the system files is your best bet. The steps below will show you how to do this.

  1. Press Windows + R simultaneously to open the Run dialogue, type cmd in the text field, then hold Ctrl + Shift + Enter together to open the command prompt as an administrator.
    Tamper Protection Not Turning On Windows 11
  2. In the command prompt, input the command below and hit Enter.
    sfc /scannow
  3. Similarly, input the following commands and hit Enter after each one.
    DISM /Online /Cleanup-Image /CheckHealth
    DISM /Online /Cleanup-Image /ScanHealth
    DISM /Online /Cleanup-Image /RestoreHealth
  4. After running these commands, reboot your PC and see if the problem has been resolved.

4. Modify the HypervisorEnforcedCodeIntegrity DWORD’s value

A security feature in Windows 11 called HypervisorEnforcedCodeIntegrity (HVCI) takes advantage of the hypervisor to uphold the integrity of system code and driver code. This can help maintain the stability and security of the system by preventing malware from altering or disabling system code.

Windows 11’s HypervisorEnforcedCodeIntegrity setting may be set to 0 if Tamper Protection is not turning on. To correct this, set the value to 1. Use the steps below to do this.

  1. Hold the Windows + R keys simultaneously to open the Run dialogue, type regedit in the text field, and hit Enter.
    Tamper Protection Not Turning On Windows 11
  2. Next, navigate to the path below.
    HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\DeviceGuard\Scenarios\HypervisorEnforcedCodeIntegrity
  3. Double-click the Enabled DWORD on the right-hand side.
  4. Lastly, in the Value data field, enter 1, and click OK.

5. Remove additional accounts from your computer

To reduce the risk that another account is interfering with Tamper Protection, removing extra accounts can help fix the Tamper Protection not turning on in Windows 11 problem. Follow the steps below to do this.

  1. Press Windows + I simultaneously to open the Settings app, click Accounts on the left pane, then select Access work or school on the right.
    Tamper Protection Not Turning On Windows 11
  2. If any account is found here, remove it.
  3. Navigate to Other users under the Accounts settings.
  4. Expand any account you find, then click the Remove button.
  5. Next, click the Delete account and data button.
    Tamper Protection Not Turning On Windows 11
  6. Finally, reboot your PC and see if Tamper Protection can now be turned on.

6. End and reset the Windows Security app

Resetting the Windows Security software to its default settings can assist in resolving errors with Tamper Protection on Windows 11. This will restore any missing or corrupted settings that are preventing Tamper Protection from activating. The steps below will show you how to use this feature.

  1. Press Windows + I to open the Settings app, click the Apps tab on the left, and select Installed apps.
  2. Look for Windows Security from the list of options, click the three tiny dots on the right side, and choose Advanced options.
  3. Click the Terminate button to stop all app processes, then click the Reset button.
    Tamper Protection Not Turning On Windows 11
  4. After doing this, reboot your PC and see if the problem has been fixed.

Concluding Remarks

The steps outlined in this article will help you activate the Tamper Protection if it is not turning on in your Windows 11 device, so ensure to carefully follow the steps. If you have further questions, reach out to us via the comment section below.

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David Ogbor
David is a tech guru with extensive knowledge in technical articles. He is passionate about writing and presents technical articles in an easy-to-understand format for easy comprehension. He aims to present easy solutions for day-to-day problems encountered while using PC. In his spare time, he likes traveling, playing sports, and singing.