Designers cut not working?

i just bought season pass 2 on steam, but when i tried to start the arms race quest, i couldnt find a fast travel point, so i got confused, but i found out that when i check my dlc on the steam page, its stuck in a infinite download and it wont ever finish.

does someone know how to fix this?

I would first try clearing your download cache.

If that doesn’t work, verify the game files. If you’re still having trouble you can do a full reinstall. I’d back up you saves before reinstalling just in case.