Error "Registry Editing has been disabled by your administrator"

Method 1: Using the REG.EXE console tool

1. Click Start, Run and type this command:

You should be able to launch Tweak UI, as well as the Registry Editor.

Method 2: Using the Group Policy Editor (Windows XP Professional only)

• Click Start, Run and type gpedit.msc and press ENTER
• Go to the following location:

User Configuration | Administrative Templates | System

• Double-click Disable registry editing tools and set it to Not Configured
• Exit the Group Policy Editor

Note: If the setting already reads Not Configured, set it to Enabled, and click Apply. Then revert it back to Not Configured. This ensures that the DisableRegistryTools registry value is removed successfully.

OR

Start -> Run -> type the below command and press entre

REG add HKCU\Software\Microsoft\Windows\CurrentVersion\Policies\System /v DisableRegistryTools /t REG_DWORD /d 0 /f