Is it possible to add DLC/Games bought on the Xbox One to my PC?

If the games are Play Anywhere, you can sign into the Microsoft Store with the same account and redownload them on the PC. https://www.xbox.com/games/xbox-play-anywhere Otherwise,
you would have to purchase them on the PC.

Thanks. One more thing I'd like to ask. Is it possible to install DLC bought at XBL Marketplace to this internal memory? Maybe the "no hard drive" problem occurs only when trying to install add ons from DVD... I think it would be quite stupid to lose potential
customers - owners of Xbox without HDD - by not allowing them to buy even smallest DLC via Marketplace. I know that arcade games and demos can be stored at this 4gb space (3.1 gb to be precise). I know HDD is the best idea overall, but I just wanted to enjoy
F:NV with all add ons, no more space needed with my typical use of Xbox tbh. I guess if it's possible I'll buy DLC at Marketplace. Anyone tried that ?

I forgot to add that in my account online it won't let me redeem the DLC's that I bought also due to me not being on my current PC.

Hey there !

If you're using the game of the year edition, be sure to insert the second disc first to add the licenses for DLC to your account. From there you should be able to install the content if it isn't already installed.

It's not the game of the year addition; I bought the game without add-ons several years ago, and a while after bought a disc called "Add-On Content Pack - Borderlands 2" with some of the DLC on it. The DLC all work on my 360, but I was hoping to move mostly
on to using the One.

Yeah, i think its just a simple redownloading of the Game/Add-on that will fix the Problem,

I've had this issue before with my Game DLC after have to hard reset my Xbox One, the Games worked fine, but wouldn't recognixe any of the add-ons I'd bought (until I uninstalled them + reinstalled them, that is)