"The activation server reported that the product key has exceeded its unlock limit." Error

[flyerstime]

How do I fix this? I only used the product key once, how could it have been already used, I was under impression that I could use it 3 times .

 

[USAFRet]

More info needed:
What version?
Where did you get it?
What did you install it on the first time?

 

[vinhn]

Get in contact with microsoft, I believe toms can't help you here.