Vista / Server 2008 Volume License Activation

Here's a strange one I ran across with a remarkably simple solution. When you initially install Vista or Server 2008 with a volume license key (or MAK/KMS key) then check on your activation, it will indicate that activation will occurr in a few days. When you click to activate now, it throws some kind of 'DNS name not found' error. The simple solution is to go back and click 'change product key' then re-enter the same exact key you used to install. Windows will activate fine and you are on your way!