What are the Causes of Lock Screen Displaying Black Background?

As it is a bug inside Windows 10, there is a workaround that we have found to be effective in this scenario. This problem occurs when your Windows “Animate windows when minimizing and maximizing” setting present in Advance System Properties is disabled. On the other hand, it might also happen due to enabled state of “Show lock screen background picture on the sign-in screen” option inside Settings. So, in order to modify these settings, follow the steps mentioned below.

Step 1: Enabling “Animate Windows When Minimizing and Maximizing”

If you have disabled this setting, then you need to re-enable it if you want to get rid of this problem. 3. Inside System Properties, click on Advanced tab followed by Settings. Performance Options window will popup. Enable the “Animate Windows When Minimizing and Maximizing” setting as displayed in the below image. Hit Apply and OK buttons respectively to save changes to the settings.

Step 2: Disabling “Show lock screen background picture on the sign-in screen”

After performing Step # 1, you need to disable following setting.

Logout of your Windows and check for the problem if it still persists. Hopefully, it might have been resolved.

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