Hi all, as you might be knowing i am a Window Vista user. I have installed many Microsoft games on my pc and they are working fine. Yesterday i was trying to install Age of Empires III on the same system but the system was giving me error message saying "The product key is not valid." I am sure about the product keys, they are correct. I tried installing it 3 times but still the same error. Do you guys have any suggestion regarding this error message ? Please help me out of this.
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