Downgrade rights generally apply to volume license customers and Software
Assurance customers. You are correct that downgrade rights do not apply to
home editions of Windows.
VL and SA customers are enterprises who have time-delimited contracts with
MS for acquisition of new editions of software. If the customer fails to
acquire the licenses for the new editions within the contract's lifetime
(the term is usually a year), then the customer will have to either pay for
a new contract or buy the software at addtional cost in order to get the
software. Downgrade rights allow the customer to acquire the new licesenses
within the current contract's lifetime but continue to use the previous
version under the new license instead. The principle is that a customer
should not be coerced into signing a new contract just to acquire currently
offered software that he is not ready to use. You have to know the ins and
outs of these contracts to understand why enterprises need to do this.
Perhaps you are an enterprise customer and know these things better than I
do.
The new wrinkle here is that MS has granted OEM's the right to offer
downgrade rights to their customers. The OEM's seek to overcome sales
resistence in this way to Vista being preinstalled. The potential problem
with an OEM license from the end user's point of view is that if the end
user replaces Vista with XP he voids the OEM license and runs into a problem
with MS when he reinstalls Vista using the OEM copy later. In the past if
the pre-installed version of Windows was SLA (bios-locked) there was no
issue because such copies are inherently pre-activated, but I understand
that some aspects of that has changed with Vista.
I may have this one wrong, but my understanding is that the home editions
are not covered under this either.
That was an offer just prior to Vista's release and it was intended to
encourage folks not to wait to buy a new computer until after Vista came
out. It was a special upgrade and not a standard OEM disk.
Isn't there a "Downgrade rights" policy from MS for "Pro" versions,
which remains in effect thru the first half of 2008,
whether or not the manufacturer makes it easier by supplying a disk?
Some readings:
Microsoft gives Windows XP five-month reprieve
"It will sell the old OS until June 2008,
even with Vista selling 'pretty well'"
http://www.computerworld.com/action/article.do?command=viewArticleBasic&articleId=9039599
FAQ: Giving up on Vista? Here's how to downgrade to XP
http://www.computerworld.com/action/article.do?command=viewArticleBasic&articleId=9040318
The XP alternative for Vista PCs - CNet
http://www.news.com/2100-1016_3-6209481.html
How to make Windows XP last for the next seven years
http://www.computerworld.com/action/article.do?command=viewArticleBasic&articleId=9026940
Microsoft: Vista Downgrade Rights (PDF, for OEMs)
http://download.microsoft.com/downl...cbd-699b0c164182/royaltyoemreferencesheet.pdf
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