Hey there.
Recently, I was doing a project on Unreal Engine. However, I accidently clicked ‘Save All’ instead of saving assets and the project to my external hard drive, and now my computer has about 15 GB left. I tried moving my assets and project to my hard drive afterwards, but it didn’t do anything. I tried looking at the Epic Games Folder, but nothing about Unreal Engine was there.
Is there any place other than the Epic Games folder it would be in? I just used the default settings when I created the project, and reading the description of ‘Save All’ it should save to the C Drive right?
Pressing ‘save all’ doesn’t matter, it just saves everything you changed since the last save.
A much more likely candidate is your vault. You can clear that using the launcher:

Sorry for bumping this topic up, but I just want to add that I am creating projects, actually learning, and I notice the projects are saving to my OS drive rather than to one of my storage drives. I’ve got a game/dev drive and an asset drive. The option to move/delete “Add To Project” does not give me an option “Remove Local Content” does not open in Fab Library or in My Projects. Actually it only says "create project’ or “install engine” in the Fab Library and “Show in Folder” when I right click on a project in My Projects.