We used a registry file hack in Windows 10 to turn off the blur effect on the login screen, but the Windows 11 update restored it to the default. We will show you how to fix it again.
Many of the tweaks and registry hacks that TechRepublic released on Windows 10 over the past decade remained in effect even after upgrading to Windows 11. However, Microsoft decided to revert a few hacks to their default settings when they upgraded to Windows 11. upgrading from Windows 11, which means we have to revisit some of these tweaks and hacks again.
In 2019, after the release of Windows 10 version 1903, Microsoft blurred the background image on the standard Windows login screen with the new UI transparency feature. The most satisfying way to change this blur effect involved hacking the Windows 10 registry file. The blurring effect was restored by Microsoft when updating Windows 11, so we need to re-hack the file from registry to delete it (again).
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How to turn off the blur effect on the Windows 11 login screen
As noted above, the blur effect on the login page is a product of the transparency function, which is predominant in the default user interface of Windows 10 and Windows 11. It is possible to turn off all effects. transparency in Windows using personalization settings, but this is an extreme solution that we do not consider plausible or satisfactory.
The best way to turn off transparency (blur) effect from Windows 11 login screen is to hijack Windows registry file or change Group Policy settings in Pro versions of operating system.
Disclaimer: Editing the Windows registry file is serious business. A corrupted Windows registry file could render your computer unusable, requiring reinstallation of the Windows operating system and potential loss of data. Back up the Windows registry file and create a valid restore point before continuing.
Click or tap the search tool in the Windows 11 taskbar and type “regedit” in the search box and select Registry Editor from the results. In the editor, navigate to this key:
HKEY_LOCAL_MACHINE SOFTWARE Policies Microsoft Windows System
As you can see in Figure A, there are no keys and values in the System folder, so we will need to create a new key first.
Right click on the System folder and select New | DWORD (32-bit) value and name it DisableAcrylicContextActivatedConnection, as shown on Number B.
Double click on the new key you just created and change its data value to 1 as shown in Figure C, then click OK and close Registry Editor.
The next time you log in, the background image should remain clear. To reapply the transparency effect, change the data value of the DisableAcrylicContextActivatedConnection key to (0) zero.
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How to turn off the blur effect with Group Policy settings
If you have Microsoft Windows 11 Pro, you can turn off the blur effect with the Local Group Policy Editor and avoid the hassle of editing the registry file.
Type “group policy” in the Windows 11 search box and select publisher from the list of results. In the Local Group Policy Editor, navigate to this folder:
Computer Configuration Administrative Templates System Connection
In the right parameter list, as shown in Number D, find the item Show connection clearing background.
Double-click the Show connection clearing background item to open the Group Policy settings screen shown in Figure E.
Change the setting to Enabled and click Apply, then click OK. Exit the Local Group Policy Editor and you will have successfully turned off the Windows 11 Pro login screen blur effect.
If you ever want to turn the blur effect back on, go to the same Group Policy setting and set it to Off.