I recently purchased the walmart xboxone bundle that came with a one, a code for the masterchief collection and some other things. When i type in the code though it says something went wrong and a very long error code was on the bottom right hand corner. Did anyone else ever have this problem?
Are you redeeming on your PC or on your Xbox? If you are on your PC, maybe try either clearing your cache and trying again, try a different browser and see if you get better results, or try on your Xbox. If you are trying on your Xbox, restart or hard reset your console and try again, or try it on your PC