Re: XP pro upgrade license

Kerry wrote:
Can I upgrde two machines in my home with an XP pro upgrade disk?


You need to purchase a separate WinXP license for each computer on which you install it. (As long as you have multiple identical licenses, it doesn't matter if you use the same CD for the installations, as long as you use a different license each time.)

Just as it has *always* been with *all* Microsoft operating systems, it's necessary (to be in compliance with both the EULA and U.S. copyright law http://www4.law.cornell.edu/uscode/17/117.html), if not technically) to purchase one WinXP license for each computer on which it is installed. (Consult an attorney versed in copyright law to determine final applicability in your locale.) The only way in which WinXP licensing differs from that of earlier versions of Windows is that Microsoft has finally added a copy protection and anti-theft mechanism, Product Activation, to prevent (or at least make more difficult) multiple installations using a single license.

One can buy additional licenses, assuming one already has a retail license. Naturally, Microsoft cannot sell additional OEM licenses. Be aware, however, that you'll probably pay more this way than you would if you were to buy a second copy of WinXP from a discount retailer; Microsoft will only offer you a 15% discount off their MSRP.

Additional Licenses for Windows XP Home Edition
http://www.microsoft.com/windowsxp/home/howtobuy/addlic.asp

Additional Licenses for Windows XP Professional
http://www.microsoft.com/windowsxp/pro/howtobuy/addlic.asp


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Bruce Chambers

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Relevant Pages

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    (microsoft.public.windowsxp.newusers)