Well I bough Halo 2 Vista today and I joyfully tried to insall it, while doing that - this screen pops up: "Invalid code, retype". In other words; my newly bought game has an invalid key and I'm sitting here hopelessly without any ideas how to solve this. I've tried looking for other keys online (even though I shouldn't) but without success.
Do I need a new copy or are there other solutions?
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That's Halo 2 for you. There probably isn't much you can do.