Download and install JDownloader , a Java-based download manager designed to handle container files.
If the file is actually a extension (or a zip containing one) used to download content via a container format ReviverSoft : Unlock DLC.zip
Click the three dots next to the game > Manage > Installation Epic Games Help . Download and install JDownloader , a Java-based download
Scenario 1: A Compressed Archive ( .zip containing game files) Download and install JDownloader
Knowing this will help me guide you to the specific files or settings you need to change.
Open the Unlock DLC.dlc file using JDownloader.
To make sure I'm giving you the right steps, could you let me know: Is it a or a .dlc file extension? Which game is this for?