Windows XP – Convert Home Edition To Professional Edition Without Reinstalling Once you have installed Home Edition (HE) or Professional (Pro) Edition of Windows XP on your PC, it is officially impossible for you to convert/ upgrade your XP HE to XP Professional Edition or the other way round, i.e. downgrade from XP Professional Edition to XP Home Edition without actually … [Read more...] about Convert Home Edition To Professional Edition Without Reinstalling