Error Message: The Product Key Used to Install Windows Is Invalid
http://support.microsoft.com/?kbid=326904

You receive a "The product key used to install Microsoft Windows may not be valid" error message
when you try to install Windows XP Service Pack 2
http://support.microsoft.com/default...b;EN-US;883254

Use the Windows Validation Assistant
http://www.microsoft.com/resources/h...w/default.mspx

Is your copy of Windows genuine
http://www.microsoft.com/resources/h...s/default.mspx


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TaurArian [MS-MVP] 2005-2006
===========================


"Pascal" <Pascal@discussions.microsoft.com> wrote in message
news:9CEEBF8B-FF49-4D13-9A90-C96D12F85B74@microsoft.com...
>I have not updated in a long time just because I did not see the point but
> recently I bought a new software which requires me to have Service Pack 2. I
> try to load it and it says it cannot let me because it might not me
> authentic. I found the product code to prove it is but I do not know where to
> enter it to show the computer that it is authentic please help me.