What is PUA? Microsoft has recently announced that it will add other means to protect against the installation of so-called possible unwanted applications or potentially unwanted applications (PUAs) in Windows Defender, but only businesses.
The protection feature for potentially unwanted applications is only available to business customers. If you are already one of the existing Microsoft Enterprise customers, you must opt-in to enable and use PUA protection.
While Microsoft has announced the new feature only for Enterprise editions of Windows 10, it does not protect the feature.
This means that each user (Home or Pro version) can activate and use the feature.
PUA protection updates are built into the cloud and come with Windows Defender updates.
Let's see how you can enable protection for PUA protection in Windows Defender
Microsoft makes no mention of which versions of Windows support PUA protection in Windows Defender. We tested the feature on two computers with Windows 10 Home and Windows 10 Pro, and worked without problems.
You should add a registry key and preference to the Windows Registry:
Let's see how:
In the Windows 10 search, type regedit and click the first icon to display. The Windows Registry Editor will open.
Confirm the UAC if it appears
Follow the route:
Right-click on Windows Defender and select New> Key.
Name the MpEngine key.
Right-click on MpEngine and select New> DWORD (32-bit).
Name the MpEnablePus DWORD value.
Restart your computer.
Once you have restarted your computer, Windows Defender will start blocking possible unwanted programs (installing and downloading through Internet Explorer or Edge).
If you want to disable the feature now, set the value in the DWORD registry to 0, or completely delete MpEnablePus.