PowerRun is a portable freeware to launch regedit.exe , Cmd.exe or other software with the same privileges as the TrustedInstaller Why would you need it? Sometimes it is just not enough to just be running as Administrator, Maybe it's a file or a registry key that is locked or not editable, PowerRun a tool with this powerfull privilege most likely solve that , PowerRun doesn't require any installation process or additional dll files.