For a moment I though It was the "DLC ready to install" feature... then I realized it was...

Have you actually tried accessing the DLC areas in game with the fast travel station?

For some reason I am able to access all the DLC areas even though I don't have any of the DLC installed. It still shows as ready to install for me

It appears that the DLC is already built into the main game for me meaning I don't have to download any of the DLC.

there not in the ready to install section i already downloaded them because i used a dlc disc and i have checked ready to install some of the dlc works like slaughter
dome but that's it

Hi!

Check the downloadable content with the "Manage Game" feature and install the desired DLCs.

I did, and i went to ready to install but nothing popped up

I think more often that not it's the standard version of games that appears on Gamepass at the moment. Not always, but usually. That is possibly changing though, especially as the Perks feature rolls out where games are starting to give out more
of the DLC with the game.

Thanks for your help. I Saw that in January 2018 I bought a DLC for Black Flag (marked "owned" in the store). But no signsof the game. If I remember correctly, when i got the XboxOne, the game was available in the section "game ready to install". Unfortunatly
Xbox Support is not available for the moment.