I purchased the Halo 5 Guardians Special edition game back in February. It installed fine, but when starting the game it comes up with the error message 0x87de2729 'The person who bought this needs to sign in'.
Now I have been through many, many different troubleshooting issues with Microsoft Support (all in all about 8 times) and they have stated that they can no longer help.
Returned the disc and got a new copy
Uninstalled the game
reinstalled with no account signed in
Cleared Blu Ray cache
Opened ports on my router
Downloaded updates from the Xbox website an installed updates
I have tried the disc in other console who have previously installed the game and it works
I have gone through console settings and router settings
I have tried many other little things as well, but to be quite honest I have lost track of everything.
Xbox Support suggest that I am encountering a licence issue but are unable to help
All my other games work fine and I am not sure what else I can do! Any help/ ideas would be appreciated (but I must admit I have probably tried them all already - my list is not exhaustive)