Starting in Windows 10 "19H1", the sign-in screen shows its background image with the blur effect applied. Many users are not happy with this change. Starting with Windows 10 build 18312, there is a new Group Policy option that you can use to get rid of the acrylic blur effect feature on the sign-in screen background image.
Tag: Windows 10 Disable Blur Sign-in Screen
Disable Blur on Sign-in Screen in Windows 10
Starting in Windows 10 "19H1", the sign-in screen shows its background image with the blur effect applied. Many users are not happy with this change. Finally, Microsoft has provided a way to get rid of it.
