My fallout 4 DLCs won't load, even when downloaded

Sorry to hear it. Please try highlighting the game on the dashboard and press the start button on the controller. Select Manage Game. If you see the DLC installed there then delete it. Once deleted go to Ready to Install and redownload the content

I have a fallout 3 problem myself. I have fallout 3 GOTY, my game disc does not read well on the one but the 360 it reads fine. the dlc disc of fallout 3 is fine and can read on the one.

Because I preordered fallout 4 I got fallout 3 game itself for download but no dlc with it so I put in the dlc disc and the console installed the dlc no problem. I run the game and check downloads and none of the dlc shows up at all not even when I load
the game but it's on my game manager as installed...

An update to this problem which still exists and has worsened.

I recently tried again to load all the Fallout 3 DLCs using my retail DLC disks. All the DLCs are downloaded but not recognized when Fallout 3 is launched, not even Mothership Zeta which was recognized when I originally made this post, and
Broken Steel is still downloaded in French only.

Same here. I downloaded Fallout 3 that came with Fallout 4 and the was code was accepted. However the game won't load, displaying that if I own the game or no and I should insert the disc. The code that came with the message was Ox803f8001 but no matter
how much I try, the game won't load.

To download any DLC that has been released go to My Games and Apps>Fallout 4>hit the menu button on Fallout 4>Manage Game. From there you can see any DLC that you can download.