- last post: 01.01.0001 12:00 AM PDT
I'm having the same problem. I bought Halo 2 from Amazon (directly, not from one of their affiliates.) It was shrink wrapped with the authentic label. Installed it last night, activation fine, but when I tried to sign in with my Live account, it popped back and said the key was invalid. And no, before anyone says so, I'm not typing it in incorrectly. I've looked closely at each character, even tried putting in a B for the 8 (in the font, the numbers are slightly larger than the letters, so it's not difficult to distinguish.)
I'm guessing I'll have to figure out who to call at Microsoft. Hope they don't give me crap saying it's a key I got off the internet or something.