After updating UEFN it will no longer run. It looks like it attempts to launch but then stops and goes back to Launch state after a few seconds.
Unreal Editor for Fortnite
Other
Launch the Editor, no longer starts.
The editor should launch
Editor stays in the “Launch” state
Win 11 Pro
We ran into same problem today, however editor started working again after verifying files for UEFN editor (https://www.epicgames.com/help/en-US/c-Category_EpicGamesStore/c-EpicGamesStore_LauncherSupport/how-do-i-verify-game-files-in-the-epic-games-launcher-a000084923).
FORT-920666 has been created and its status is ‘Unconfirmed’. This is now in a queue to be reproduced and confirmed.
can confirm that “verify” worked for us too yesterday
if anyone is interested, trying to run uefn executable directly gave error about missing tbb12.dll
Thank you for the report, closing this one as a duplicate: FORT-920624
