Xbox One Error code a.b.c.d.e.f Black Ops 3 is an error that usually occurs when trying to connect online.

Also, check for server status, for Black Ops 3 see link here while for Xbox live server see link here.

Also, sensitive to cache problem on your Xbox One. You might want to fix this, using the guide below but make sure you have the latest version of Black Ops 3, see solution 1. If you are stuck on the old version this might also help.

Clear cache

  1. Turn off your Xbox One and mode router.
  2. Unplug your Xbox One and mode router.
  3. Wait at least three minutes.
  4. Plug it back to the power source and then turn it on.
  5. Try Black Ops 3.