https://www.bleepingcomputer.com/news/microsoft/windows-10-to-automatically-block-potentially-unwanted-apps/ > Microsoft Defender and Microsoft Edge on Windows 10 will automatically block potentially unwanted applications (PUAs) by default starting this month. > Starting with the Windows 10 2004, the May 2020 update, Microsoft added a new 'Potentially unwanted app blocking' setting in Windows security that causes Microsoft Defender to block these types of applications.