How to Solve Windows 8 Lock Screen Error

At the time I wanted to try to change the look of the Lock Screen in Windows 8, I encountered a problem error and lock screen can not be changed the picture. But I have to get the right solution.

The steps are as follows:

• Go to the registry editor by pressing Windows 8 (Win + R)

• After the display appears next registry editor go to HKEY_LOCAL_MACHINE \ SOFTWARE \ Microsoft \ Windows \ CurrentVersion \ Explorer \ Desktop \ NameSpace

• See also folder {B4FB3F98-428d-A78A-C1EA-D1F5659CBA93} under NameSpace key. If it exists, click on it and in right-side pane, check the value of (Default). It must be set to Other Users

• If the key does not exist, right-click on NameSpace key and select "New -> Key" option. Now set the new key name to {B4FB3F98-428d-A78A-C1EA-D1F5659CBA93} and in right-side pane change the value of (Default) to Other Users 

• Then you try to change the look of your Windows 8 Lock Screen

Good luck........