Since the last patch to Fortnite and UEFN yesterday which had no patch notes or warnings or anything attached to it, I have not been able to start Fortnite.
Unreal Editor for Fortnite
Stability
Start up Fortnite
Game to Start
Red Error Screen
PC
this works but have to keep doing it, 4 times last 2 days
still going on and fixing it by deleting cache is just causing other issues with login etc… really terrible performance since this update..
about 2 days it was fine then started getting the error screen again, and again just endless login issues with epic games launcher etc as well..
Still constantly happening
36.20 still happening (on multiple machines i have tested now)
I never use revision control so its not related
The sequence of events after pressing launch sessions:
after taskbar minesweeper trying to get rid of all the duplicates of fortnite etc:
Cache delete does not fix this, nor does any executable modifications and really this never happen before 36.00 happened so i don’t see how this is on my end anymore. I am only the most recent nvidia drivers, have tried rolling them back..
Deleting FortniteGame in %LocalAppData% (\AppData\Local) fixed my red screen
Deleting all but VerseProject and VerseSnapshot in UnrealEditorFortnite in %LocalAppData% (\AppData\Local) fixed my uefn login issues
In general UEFN and Fortnite are running faster than ever now but I did a few other things as well that I am not sure if related, i know it didn’t fix my issue with errors but it may have helped make it run better/faster as far as timeouts which I have always had with UEFN which I don’t seem to have at least as bad anymore 
and
