The windows 10 may 2020 feature update is about to introduce a new security feature that can help users detect and prevent PCs from installing PUA (potentially unwanted applications). According to a support document found by ZDNet, Microsoft defender has set a special option in the settings panel to prevent you from installing programs or applications that are known to be unnecessary.
It is worth mentioning that this feature has been in Windows 10 and Microsoft defender for some time, but it was previously accessed through group policy settings. However, in the windows 10 may 2020 feature update, Microsoft defender will take the initiative to protect your PC from PUA threats.
The full name of PUA is potentially unwanted applications. For example, one of the applications is CCleaner, which is sometimes bundled with avast antivirus software. Microsoft's new edge browser has blocked downloads of potentially unwanted applications since March, but windows defender will now offer this feature to all windows 10 users in a may 2020 update.
You can open PUA protection in the Microsoft Defender by going to Start, according to Microsoft's support page