[2023] We were unable to verify ownership of this dlc

Please restart Steam after verifying your files! Let us know if that doesn't resolve your issue.

Originally posted by avilob: yup did everything, redownloaded the game, restarted steam, verified files

Are you still experiencing issues after verifying the files, and then restarting Steam (in that order)?

@avilob and @Xentor, can you confirm that you have updated to 3.10.0, and are not using an older branch of the game?

Originally posted by Lucullo: I too have this problem. I verified the files and restarted Steam a couple of times but it is still there.
However, the "unable to verify ownership" flag appears only in the launcher (DLC tab) while the "addtional content" page says "owned".
I've not yet tried playing.

Our team says that the launcher may be a little wonky, but as long as the "additional content" page has updated, you will have access to the new DLC.