In older versions of Windows—like Windows 7, Windows Vista and Windows XP—before Windows 10 came out, the Windows operating system would pop up a message on the computer’s screen if you didn’t have any antivirus installed and tell you to install some. Windows didn’t provide any antivirus for you, so you then needed to work out which antivirus you wanted to install from a third-party. So you would then hunt around the internet and try to find a good mix between anti-virus that was getting good reviews and antivirus that was available at a good price; it was a huge pain in the butt.

Microsoft then finally came to its senses and started developing an anti-virus solution of their own—that anti-virus was named Windows Defender. The Windows Defender used to be available as part of the Microsoft Security Essentials, so it’s not like Windows Defender is entirely new, but it is much better than it used to be.

Some people still wonder whether Windows Defender is good enough to be the anti-virus of choice to have installed on a computer, even with it’s much better capabilities than years ago. That is not an easy question to answer—even for tech enthusiasts who write about tech for a living. I’m sure many people would disagree with each other’s opinions if you were to ask a bunch of different writers from various sites.

From our experience, we say yes: Windows Defender is good enough to keep installed on your operating system and used as your only anti-virus solution. For starters, scanning with Windows Defender is really easy to do. We’ve covered a full how-to guide already that covers how to use Windows Defender in detail. That same guide also shows you how you can easily scan individual files as you roam freely around the Windows 10 operating system. For example, if you open File Explorer, you can quickly scan a file in a folder because Microsoft has integrated Windows Defender to be a simple solution when you use Windows—you won’t get that same kind of integration available with other anti-virus programs. One of the arguments people make against using Windows Defender is that an anti-virus isn’t enough to protect a computer anymore and that you need to have a two-in-one anti-virus and anti-malware protection working together. Here’s the thing: Windows 10 does have an anti-malware program working in the background also: it’s called the Malicious Software Removal Tool. You can find out how to use the Malicious Software Removal Tool if you haven’t heard about it already.

How to Turn On or Off Windows Defender in Windows 10 with Local Group Policy Editor

You can turn Windows Defender anti-virus on or off using a Group Policy from the Local Group Policy Editor. To get started, open the Local Group Policy Editor. When it’s open, click on the “Computer Configuration” in the left side pane.

Next, click on the “Administrative Templates” in the left side pane.

Now click on the “Windows Components.”

Scroll down the list of components until you get to the “Windows Defender Antivirus” entry and expand it by clicking on it. Now turn your attention to the right side pane and double-click on the “Turn off Windows Defender Antivirus” entry to bring up the policy window that lets you adjust its settings.

By default, the “Turn off Windows Defender Antivirus” policy is set to “Not Configured” which means that it won’t be turned off because Windows 10 has it turned on by default. So, to disable it, you need to move the checkmark to the “Enable” position, click on the Apply > OK buttons down the bottom of the policy window.

The Windows Defender is now turned off for as long as you don’t go back into the Local Group Policy Editor and change the checkmark to either “Not Configured” or “Disabled.” You’ll want to put it back on “Not Configured” just in case there is a feature available in future versions of Windows that allows you to start making changes to it from outside the Local Group Policy Editor. If you set it to “Disable” then the Windows Defender is always going to be turned on no matter what you want to do unless you make that change from within the Local Group Policy Editor.

So, when you want to turn the Windows Defender anti-virus back on again, open the Local Group Policy Editor, follow the same path as you did above and change it from “Enabled” to “Not Configured.” Then type “Windows Defender” into your search field from the taskbar and click on the Windows Defender application under the Best match section. With Windows Defender open, click on the “Restart Now” button.

The Windows Defender program then starts running, and you can tell by the new green tick that is being shown where it has the “Virus and Shield protection” icon. It also says in big words above “Your device is being protected.”

You can now close the Windows Defender antivirus and be confident that your computer is being protected.

There are a lot of different opinions floating around out there about whether or not you should keep Windows Defender turned on or replace it with another anti-virus program from a third-party vendor that specializes in security. You could easily make a case for wanting to replace it because Microsoft has shown in the past that just because it is the billion dollar company, that doesn’t mean it bothers creating the best features for its operating system. There are lots of tools out there that are better for system images than what Microsoft is offering for backing up system images for itself. That said, if you want an opinion or insight in what I run, I think Windows Defender works just fine because I haven’t had any issues with it so far. I also continue to use it as my only anti-virus (you can only use one at a time.) Windows 10 also offers a separate anti-malware tool that is running scans in the background for you just like it does with Windows Defender. Both of those features packaged together is all the average user needs to stay secure. Relying on the scan results to make your decision isn’t a great way of going about it. It’s just as easy for Window Defender to act like it doesn’t see something as it is for something else like AVG to include additional items not worth worrying about in a scan report. What really matters is the results: how is your computer working and have you had any problems with it?

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