I’ve been chasing down why my 500 GB C drive is running low on storage, nothing visible in Storage settings (Windows 10) accounting for but half of my storage space. Though this article speaks to some 8 GB in my Vault Cache folder, I kept hunting for a remaining 220 GB hiding somewhere, then found it within [User Name]\AppData\Local\UnrealEngine. I see subfolders for every engine version I’ve ever run on this PC, only two of which I currently have loaded, am tempted to simply delete the unwanted ones at the Directory level, but know how fussy Unreal is rearranging the furniture at the system level. Is there a way to manage this inside of Unreal, or is it okay to delete from Directory? Lastly, but most importantly, the real culprit is the Common folder. I haven no clue what type of data it contains , how critical and to what, nor how to manage it. Thanks for ideas!