Registry Editing has been disabled by your administrator, if you get this error message. The registry editor has been disabled by your system admin through group policy.
We can remove the restriction through a command in standalone machine.
1. Go to Command Prompt. Type the below command
2. REG add HKCU\Software\Microsoft\Windows\CurrentVersion\Policies\System /v
DisableRegistryTools /t REG_DWORD /d 0 /f
Now you able to acces to your local machine registry editor.