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If your xboxone will sign into xbox live but not allow multiplayer, then it is an issue with your router and or/ network. Make sure your firewall...
My issue was with the new Gateway Router/Modem Combo I had to install from Comcast Xfinity. The firewall was set on medium and it should have been...
It says Data Center: Searching.......I hit play, then it is stuck on Connecting...Retrieving Matchmaking List forever...This has been happening...