Microsoft says I have used the product key for FSX acceleration too many times even though I used it once on another computer Can I uninstall it on the old computer and reinstall it on the new one. Which operating system are you using on the computer. Yes you may uninstall the game from the old computer and then check. Method 1: You may try the steps in the link and check if the issue gets resolved. Flight Simulator X: “An error occurred while attempting to activate the product The problem may be due to an incomplete installation of the application. Method 2: You may also refer the following Knowledge Base article and check if it helps. Microsoft Games and Mapping: product key not valid. Also, for more information follow the article given below. Activate your Microsoft games and mapping programs. Be the first person to mark this helpful.
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