If your subscription expired, or if the license server is down, CDA3 may present this generic error instead of a straightforward "license expired" message. This is a known UX flaw in older CDA3 builds.
This is the most effective solution. Deleting the cache forces CDA3 to rebuild the broken link. autodata cda3 has encountered an error link
If you have multiple CDA3 data discs (e.g., 2018 and 2019 versions): If your subscription expired, or if the license