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I tried to play Halo 2 today online and it said that some downloaded content is damaged and I'm missing all my map packs. Is there any way to fix this?(It does this for every Xbox Original by the way)
Probably best to download them again. They're free as of now, and I'm currently downloading all of the map packs now so I have them once Halo 2 goes offline so you should be good if you try that.
I don't know about the other games but this should help with Halo 2.