Download and install JDownloader , a Java-based download manager designed to handle container files.
Open the Unlock DLC.dlc file using JDownloader. Unlock DLC.zip
Run the game to check if the content is unlocked. Scenario 2: Container File for Downloads ( .dlc ) Download and install JDownloader , a Java-based download
Right-click the game > Manage > Browse local files Steam Support . Download and install JDownloader
Start the downloads to acquire the actual content.
If the file is actually a extension (or a zip containing one) used to download content via a container format ReviverSoft :