Related question:
Je suis actuellement running Windows 7 Enterprise RTM which is part of my MSDN subscription. Cependant J’ai besoin de downgrade to Professional on one of my machines. In Vista you could change entre certain editions by providing the clé de produit and re-activating, cependant this ne work in Windows 7.
Comment puis-je switch editions avec a valid clé de produit sans having to re-installer?
Source : Super User
Downgrading to a lower SKU n’est pas possible, from what I know. Windows 7 Enterprise is a superset of Professional, so your seulement option is reinstalling, from my knowledge.
The same thing is true in Vista, vous pouvez seulement upgrade, not downgrade (Home Premium to Business was allowed, the other way around n’était pas allowed).
Modification : ici’s the official response from Microsoft, courtesy of Mary-Jo Foley:
So the answer is no, you ne peut pas use WAU
to move from Windows 7 Enterprise to
Windows 7 Professional parce que that
would essentially be a downgrade.
Windows 7 Enterprise is just like
Windows 7 Ultimate, all du
fonctionnalités are part du SKU.
What WAU is meant to do is allow utilisateurs
to add more fonctionnalités to Windows 7 by
upgrading to a higher edition sans
having to go through a time-consuming
re-installation processus. Il y a a
variety of scenarios in which a utilisateur
may choose to upgrade après the
initial purchase, including:
A consumer purchases a PC pre-installé avec Windows 7 Starter
and wants to turn it invers le best PC
for entertainment.
A customer purchases Windows 7 Home Premium, but realizes they need
Professional fonctionnalités including Domain
Join, which provides the ability to
add the ordinateur to a company or
school réseau.
Someone
purchases a PC pre-installé avec
Windows 7 Home Premium and wants to
experience of all of what Windows 7
has to offer avec Windows 7 Ultimate.