I believe this is tied to URC being considered a part of UEFN. With the recent additions for URC’s VS Code extension I think there is a process that is spawning that is being seen as “UEFN is already running”.
This kind of a finicky workaround but have you tried launching UEFN directly instead of through the epic games launcher? Someone had told me to pin a shortcut to uefn and it seemed to work pretty well, helped a lot around the start when opening fortnite would frequently mark uefn as already running
Yea I can’t disagree but a workaround is a workaround and to be fair I’m just used nowadays to launching uefn straight from my taskbar and not the epic games launcher since it’s faster.