

You may find that the publisher is unknown.

In the pop-up window, you can know the application's name and publisher.

For new information and options, you can click on More informationLink displayed below warning message. If the above warning screen appears, make sure the app is fully secure. see more information What to do when "Windows protected your PC" appears in Windows 10 Allow app to bypass Windows Defender SmartScreen message How to remove red screen stuck on your computer If your computer red screen stuck, how to remove fake machine error? Try some operations below. Windows SmartScreen prevented an unrecognized application from starting." The warning says "Windows protected your PC.

Typically, a pop-up window appears when you try to run or install an application that Windows doesn't recognize. This can be a good protection measure for your PC. It is turned on by default and runs in the background to prevent you from running certain applications that are not recognized by the Windows software database or are known to be malicious. Among these features, the Windows Defender SmartScreen feature is representative. Windows 10 comes with some built-in security features designed to protect your PC from various malicious apps and criminal websites. Case 1: Windows SmartScreen Protection pop-up on desktop screen Now, let's see two cases of "Windows protected your PC" pop-up window.
