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Windows Defender Blocked by Group Policy: 5 Solutions to use

Uninstalling third-party antivirus is often very effective

5 min. read

Updated onApril 3, 2024

updated onApril 3, 2024

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Millions of people use Microsoft’s built-in antivirus, Windows Defender, to protect their computers. But, unfortunately, sometimes it can’t do its job because of various errors.

One of the most common Windows Defender error messages is the following: Group Policy turns off this app.

We will discuss the causes of this problem and some of the most trusted solutions available.

Why does Group Policy block Windows Defender?

Windows Defender is a reliable built-in antimalware for the OS. If the Group Policy blocks it, there are a few common suspects, including:

While there may be other triggers, these are the culprits in most cases.

Windows Defender is a solid antivirus, but sometimes issues can occur. Speaking of Windows Defender issues, here are some problems that users reported:

What can I do ifThis app is turned off by Group Policy?

What can I do ifThis app is turned off by Group Policy?

1. Make sure that old third-party antivirus tools are removed

Windows Defender is designed to turn itself off once you install athird-party antivirus. If you had a third-party antivirus on your PC, it’s possible that the issue was caused by it.

Even if you remove your antivirus, sometimes there might be some leftover files or registry entries. These files can also interfere with Windows Defender and cause this issue to appear.

To fix the problem, removing those files from your PC is essential. The best way to do it is to download adedicated uninstallerfor your antivirus. These tools will remove any leftover files and registry entries and completely remove any application from your PC.

Also, consider switching to a different third-party antivirus. Unlike Windows Defender, third-party antivirus tools offer advanced features that many users will find useful, such as online banking protection and privacy insurance.

If you want extra security on your PC, you should consider the tool recommended below. One hundred ten million users trust it for a good reason – it offers excellent protection from malware.

ESET HOME Security Essential

2. Delete antivirus keys from the Registry

3. Disable settings in Group Policy

Want to use Group Policy on your Windows 10 Home edition? Find out how to get it by using thisquick guide.

4. Turn on Windows Defender from the Settings app

If you’re getting a message that Group Policy deactivates Windows Defender, you might be able to fix the problem simply by turning it on from the Settings app.

5. Check if the Microsoft Defender service is running

If you’re getting a message saying that Group Policy deactivates Windows Defender, the problem might be the disabled Windows Defender service.

However, you can easily enable this service and fix the abovementioned problem. There you go. Use one of these methods, and the Group Policy will no longer disable Windows Defender.

We also have a useful guide on what to do if youcan’t open the Windows Defender Scans folder, so you might want to visit it.

Lastly, if you have more suggestions or questions, feel free to drop them in the comments below.

More about the topics:Windows Defender issues

Madalina Dinita

Networking & Security Specialist

Madalina has been a Windows fan ever since she got her hands on her first Windows XP computer.

She is interested in all things technology, especially emerging technologies – AI and DNA computing in particular.

Prior to joining the WindowsReport team, she worked in the corporate world for a number of years.

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Madalina Dinita

Networking & Security Specialist

Madalina is a Windows fan since forever, especially interested in AI, emerging technologies, privacy, and security.