404 error code with installing to console with console being on sleep power mode for...

Try this: Uninstall the game. Set the game to reinstall and immediately put the console in sleep mode. Try to let the console sleep during the entire installation. The install will go much faster and have reduced chance of error in sleep mode. After a bit,
wake the console up and install the update. You may wish to put the console in sleep mode once the update starts. Again, this will make it update faster with reduced chance of error. Then wake the console up a bit later and see if that worked. It should work.

It's probably updating the system OS or any games installed on the console. Sleep mode allows for updates to the console when turned off and not in use.

Learn about power modes has more information.

It's a rather large install. You can usually speed up installs by starting the install and then putting the console to sleep. The game will continue to install while asleep and since the console will be performing very few functions while in sleep mode,
installation time will be drastically reduced.

Yeah try uninstalling it, then go to the network settings and disconnect wireless (Or just unplug the ethernet cable if it's a wired connection). Install the game fully from the disc, then reconnect to the network again. Most discs install quicker if they're
not trying to download the updates at the same time.

Like bowski477 said, put the console into "Instant-on" mode to install updates while it's in sleep mode. look under the Power & Startup section of the settings app to check if this mode is on. Also, make sure that the "When Xbox is off, turn off storage"
is not selected, as this may interfere with it's ability to install anything when the console is not actually on and being used.

Thank you. Head over to your console > Go to Settings > General > Power options > Sleep, Kindly check if sleep is the one that's enabled. Because when I tried to put it on Energy saving mode, that's the error that I got earlier.