When you try t o open the registry editor, you may receive the message “Registry Editing has been disabled by your administrator". This is caused by restrictions placed in Registry but we could not able to access the registry directly. Here we use REG add or Group policy to resolve the issue.
Method 1:
Click Start, Run and type this command:
REG add HKCU\Software\Microsoft\Windows\CurrentVersion\Policies\System /v DisableRegistryTools /t REG_DWORD /d 0 /f
Method 2: Using the Group Policy Editor
1. Click Start, Run and type gpedit.msc and press ENTER
2. Go to the following location:
User Configuration | Administrative Templates | System
3. Double-click Disable registry editing tools and set it to Not Configured
4. Exit the Group Policy Editor