In some computers, you may come across this message that "registry editing has been disabled by your administrator". This is a good practice to disable registry editing to protect your computer from Visrus. Only problem with that is you can not install any program in your computer unless you enable the registry editing back on. Follow the steps below to disable the registry editing. This has been tested on my Windows XP operating system.
1. Go to Start -> Run and type gpedit.msc. This will open Group Policy Windows.
2. Navigate to User Configuration -> Administrative Templates -> System -> Prevent access to registry editing tool.
3. Then Click on "Prevent access to registry editing tool" and select "Enabled" under Setting Tab and Click Apply and then OK.
4. Now try to edit the registry and You will see this error "Registry Editing has been disabled by your Administrator".