Find the main installation folder of the game.
If the file is actually a extension (or a zip containing one) used to download content via a container format ReviverSoft : Unlock DLC.zip
If Unlock DLC.zip is a zip file containing files meant to be placed into a game directory: Find the main installation folder of the game
Start the downloads to acquire the actual content. Unlock DLC.zip
Run the game to check if the content is unlocked. Scenario 2: Container File for Downloads ( .dlc )
Click the three dots next to the game > Manage > Installation Epic Games Help .