[2022] All my DLCs corrupted!

This issue is addressed in the patch release notes:
https://forum.paradoxplaza.com/forum/threads/dev-team-3-6-0-orion-released-checksum-0028.1559378/

Known Issue: We have become aware of some reports of the launcher incorrectly stating that DLC installs are corrupted. This is a purely visual bug, and we are currently investigating a fix.

All the best!