Beginning with the Windows 10 update of May 2019, the blurry transparency "Fluent Design", located on the taskbar, the Start menu, and elsewhere, will be used on the login screen. If you want to see the background of your lock screen clearly, follow these steps to disable the blur.
If you disable the lock screen, Windows 1
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The Easy Way: Disable Transparency System -Wide
If you do not like the look of the transparency effect, you can easily use it for all aspects of Windows 10 disable. This disables him not only on the lock screen, but also in the system tray and at the very bottom of the apps "computers" or "people". This method is an all-or-nothing approach and should only be disabled if you do not enjoy the look on your desktop.
RELATED: Disable the new transparency effects in Windows 10
Open the App Settings and go to Settings> Personalization, or right-click on a blank Place on the desktop and then click on "personalize".
Select Colors on the left side of the Preferences window, scroll down until you see the Transparency Effects option , and then set it to "Off".
To undo this change and enable the transparency effect on Windows 10, you can return here and set this feature to "On".
Home user: Disable background blur about the registry
If you are using Windows 10 Home, you must edit Windows Registry to make these changes. You can do this the same way if you are using Windows 10 Professional or Enterprise, but feel better than working with the Group Policy Editor in the registry. (However, if you have Pro or Enterprise, we recommend using the simpler Group Policy Editor (see the description in the next section).
Default Warning: The Registry Editor is a powerful tool whose abuse makes your system unstable or even inoperative This is a pretty easy hack, and as long as you follow the instructions, you should not have any problems, if you have never worked with it, you should think about how to use the Registry Editor before you get it in any case, the registry (and your computer!) before making any changes.
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You should do that before you you should set a system restore point, it's not a bad idea, and it can not hurt to do one manually to create. If something goes wrong, you can always roll back.
Then, open Registry Editor by pressing Windows + R. On your keyboard, type "regedit" in the box and press Enter.
. In the left sidebar, navigate to the following key, or paste it directly into the address bar above:  HKEY_LOCAL_MACHINE SOFTWARE Policies Microsoft Windows
Right-click the Windows key, select New> Key, name it "System" and press Enter.
Right-click the system key, select New> DWORD Value (32-bit), and then name it" DisableAcrylicBackgroundOnLogon. "
This should not be necessary. Restart your computer for this change to take effect. Just press Windows + L to lock your computer, and you'll see the login screen with the background image in full focus, with no further blur.
You can undo this change Just go back here, find the value "DisableAcrylicBackgroundOnLogon" and delete it or set it to "0" registry hack. Just open the downloaded ZIP file, double-click the DisableBackgroundBlur.reg file, and agree to adding the information to your registry. We've also added an "EnableBackgroundBlur.reg" file that you can use if you want to undo your change later.
You do not have to restart your computer. The change should take effect immediately and will be displayed the next time you lock your PC (press Windows + L).
These .reg files only change the registry settings described above. If you want to know what this or another .reg file should do before you run it, you can right-click the .reg file and select Edit to open it in the editor. You can easily create your own registration hacks.
Pro and enterprise users: Disable background blurring through Group Policy  If you are using Windows 10 Professional or Enterprise The easiest way to disable background blurring is to use the Local Group Policy editor. It is a pretty powerful tool. So if you've never used it before, it's worth taking some time to learn what it can do. If you're on a corporate network, do everyone a favor and contact your administrator first. If your work computer is part of a domain, it's likely to be part of a domain group policy that replaces the local group policy anyway.
RELATED: Using Group Policy Editor to Optimize Your PC
You should also create a system restore point before proceeding. It's not a bad idea if you've messed around and it can not hurt to create one manually. That way, you can always roll back if something goes wrong.
First, launch the Group Policy Editor by pressing Windows + R and typing "gpedit.msc" into the field and pressing Enter.
. Navigate to Computer Configuration> Administrative Templates> System> Login.
In the right pane, search for "Show Background for Unique Login" and double-click it.
Set "Show Clear Clear Logon Background" to "Enabled" and then click "OK." You must restart your PC before the change takes effect.
l put it leads to default – again. To get around the lock screen, just go through our manual and re-add the registry value.
RELATED: Disabling the lock screen in Windows 8 without using Group Policy
To reset this setting to the default, double-click it back here, and then click Delete Logon Background "to" Disabled "or" Not configured ".