So i uninstalled Halo 5 to save hard drive space until i saw the new updates coming to game and decide redownload it but now it wont install. I tried doing offline and still not working. I am in preview program and was told that can be cause but i dont think so. Is there any way get the game to install.
Try a hard reset. Disconnect the external drive reconnect it, make sure your installing to the external as well.
Maybe try restarting your Xbox.
I have restarted the console but still says installation stopped.