The most frequent culprit is a DLC that is owned but not actually downloaded to your hard drive.
So yes—it’s a useful, protective feature, not an error. If you’re sure you own the DLC and still see it, verify your Steam DLC installation. euro truck simulator 2 missing dlc detected
"Bug," he muttered, taking a sip of cold coffee. "Just a UI bug." The most frequent culprit is a DLC that
for real-time reports from other players experiencing similar DLC detection problems. Browse the Truck Simulator Wiki verify your Steam DLC installation. "Bug