Fix a Windows 8 Lock Screen Image That Will Not Change (Historical)

Historical support note: Windows 8 is no longer supported. The policy names in this article are preserved because they explain a genuine reason lock-screen personalization can be blocked.

If Windows 8 says the lock-screen image was changed but the old image remains—or the Browse button does nothing—check policy before editing unrelated registry keys.

1. Check lock-screen Group Policy

On editions that include Local Group Policy Editor:

Press Windows key + R.
Run gpedit.msc.
Go to:

Computer Configuration > Administrative Templates > Control Panel > Personalization

Check these policies:
- Prevent changing lock screen and logon image
- Force a specific default lock screen and logon image

If either policy is enabled intentionally by an organization, the user may not be allowed to change the image. If this is your own unmanaged PC and the setting was changed accidentally, return the relevant policy to Not Configured.

Windows Home editions may not include Local Group Policy Editor.

2. Test another image and user profile

Try a local JPG/PNG stored in a normal user folder. If another Windows account can change its lock screen normally, the fault is probably profile-specific.

3. Repair system files

From an elevated Command Prompt, run:

sfc /scannow

If Windows components are damaged, System File Checker can restore protected system files.

What was removed from the original article

The earlier version instructed users to create or edit this Explorer namespace CLSID:

{B4FB3F98-C1EA-428d-A78A-D1F5659CBA93}

and set its default value to Other Users. That shell namespace entry is unrelated to lock-screen personalization and has been removed from the troubleshooting flow.