Registry tweaks are an important way to customise your system, resolve problems and make Windows Vista work the way you’d like. But sometimes, when you try to change a Registry value, you’ll find REGEDIT displays an error message telling you “access denied”, or that you don’t have “permission”. So what’s going on?
The problem may be that you’re running REGEDIT from a standard, rather than Administrator account. Click Start, type REGEDIT, right-click the link to “regedit.exe” and select Run As Administrator to ensure you have the security rights you need. If that doesn’t help then you can try to take ownership of the key, assuming you know where to look – it’s not an easy option to find.