Add spaces: IfyourPCopenstheHEUfile,butit'sthewrongapplication,you'llneedtochangeyourWindowsregistryfileassociationsettings.Inotherwords,WindowsisassociatingHEUfileextensionswiththewrongsoftwareprogram.
If your PC opens the HEU file, but it's the wrong application, you'll need to change your Windows registry file association settings. In other words, Windows is associating HEU file extensions with the wrong software program.