Registry Editor has been disable by Administrator

Some time we need to edit our system registry, but computer says on an error message "Registry editing has been disabled by your administrator." There is a simple way to enable it unless that PC is using Group Policy Editor.To do that follow these steps:

Click Start, Click Run and type gpedit.msc then press ENTER.

A window will open like this.

Go to the following branch:
User Configuration -> Administrative Templates -> System
Double-click on Prevent access to registry editing tools.

 Set it as Not Configured and it's done.

If it's already set as Not Configured, set it to Enabled and click Apply. Then repeat the steps and revert the setting back to Not Configured. This removes the registry based policy if set already.
So now you can do some research work on your PCs when under Registry Editing based.