: Authentic DLC files reside in GameData/SquadExpansion/ . Inside, you should find Serenity (Breaking Ground) and MakingHistory (Making History).
KSP looks for a specific folder named Expansions within the GameData directory. If the assets are present and the API check is bypassed, the game loads the parts and features seamlessly. The Risks: Why "Working" Isn't Everything ksp dlc unlocker work
If a friend owns the DLC, you can play it on your account via Steam Family Sharing (as long as the friend is not actively playing a different Steam game). : Authentic DLC files reside in GameData/SquadExpansion/