Now sure what I did or whether it was an update, but this new bug (or even worse, design decision) makes Fortnite and UEFN count as one software, which is annoying cause I want to be testing in UEFN and simultaneously opening FN to look at things or record things. Now it wont let me as when UEFN is open, Fortnite is “running”
It has been like this for many of us for at least 6 to 9 versions… Most people just pin UEFN to the taskbar and start it from there. This bug has been reported over and over and over, Epic doesn’t care to fix it so the work around is to have a shortcut to open it. So you open Fortnite first (or just launch a session when in UEFN) and then open UEFN.