Just found this thread. Thanks for this. I managed to get my origin install working with the missing dlc's after nothing happened with my open case.
For me origin beleives "The stone prisoner, wardens keep and return to ostagar" dlc as not owned and you need to buy them. But of course I own them in bioware social network. Opening the game also lists them all in the tabs (although 2 of the tabs are unusuable in the origin version)
All the rest of the DLC were active and working (although this may be because i had a number of dlc installs in my documents folder from years past when i last had origins installed via a disc. This possibly made getting it working for me easier. Guess I will keep these forever backed up from now on just in case).
Golems of agranok and feastday i never owned on the disc version and I brought those on origin. Apparently doing that those dlc are also available now on bioware social. It is odd they can't be back linked for all existing customers when it does it automatically the other way.
Steps that worked for me
Followed advice earlier to install the http://supportfiles.bioware.com/dragonage/DAUServiceDiagnostic_beta.exe to get daupdater installed.
Installed the dlc dazips from bioware social. Didn't even have to run the dragon age updater windows service so far. All the dlc are active and working
Now back to dragon age 1 through to inquisition playthrough 🙂
:* BIG KISS! Been struggling with this for ages, thank you sooo much for this 🙂
