Antivirus - Windows Defender

Windows Defender is an antivirus application which is integrated by default in Windows 8 and Windows 10, it can clean your PC from malware and adware not only viruses.

Some year back, Microsoft created its own antivirus solution. This solution was called Windows Security Essentials and could be installed on Windows XP. As Windows XP was discontinued, on newer versions of Windows Operating Systems (OS), this solution is called Windows Defender. This app is able to remove viruses, and it can be teach to remove other type of infections like malware, adware, junkware, toolbars and much more.

Theoretically you could use more apps to keep your computer clean. But as we have Windows Defender as default, we could make it to do all the work instead of filling our computer with more anitivirus and malware apps.

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Why Windows Defender It’s Not Efficient from the Start?

By default, Windows Defender can treat only viruses. But for Enterprise clients it has integrated some other anti-malware functions that can treat many more problems. As a non-enterprise client you can manually activate these functions on your home computer if you are using Windows 8/8.1 or Windows 10.

READ MORE: How to Disable Windows 10 Automatic Updates?

It would be a bad mistake to not to profit from Windows Defender features especially if you are using only Windows Defender on your machine.

As always we will need help of the Windows Registry. Also make sure to backup your Registry in case if you do something wrong.


First, lets backup the Windows Registry. Press Windows + R from your keyboard and type: Regedit and hit Enter key. If you use Windows 10, you will have to click Start and write Regedit and hit Enter key. In the Registry window go to File and Export, write a name and click Save. This will be the backup for your Registry.

Now, from Registry window, from the left navigate to: HKEY_LOCAL_MACHINE\SOFTWARE\Policies\Microsoft\Windows Defender. When you are in this section, click on the right on the Windows Defender and choose New -> Key. Give it the following name: MpEngine and hit Enter key. Then right click on MpEngine and go to New and select DWORD (32 bit) Value. Write the value name as: MpEnablePlus. The double-click on MpEnablePlus and add a new value 1.


Then click OK, and exit the Registry and restart your computer. From now on Windows Defender will be able to any PUP – Potentially Unwanted Program, and you will be informed with a message box near the clock on the start menu. In the history section from Windows Defender you will be able to confirm if the detected thing is a virus or an unwanted malware.


Alternative Easy Method to Make Windows Defender More Efficient

If you are not used to work with Windows Registry Editor, and you think you are not gonna make it. You can easy add the same thing in the Registry by just downloading the Modified Registry Key from this address. Download the zip format, and inside you will see two files, the first is called – Enable PUP Scanning and will activate the same function with I wrote about above. The second file, if you open it, it will Disable PUP Scanning. Remember that Enabling or Disabling PUP, will require to restart your computer to work.

READ MORE: Windows 10: Configure Update & Security

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