Hello James,

>I hope this is clear enough. We bought some licenses from an online vendor and they gave us the stickers with the product keys on them. We then used the CD we have from our MSDN Universal subscription to install Windows. Then we tried to go through the Activation process. We chose to activate by phone then clicked on the Change Product Key button. We entered the product key and got a message saying it is invalid.

Didn't you get a CD from the vendor ? I'd guess you bought a kind of oem-version from him and now you try the oem-keys with the retail version (msdn), which won't work...

hth
Matthias