Can't Launch UEFN

General Issues and Bug Reporting
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1

Summary

I downloaded UEFN and wanted to launch it but I got this popup saying UEFN’s data is corrupted which it isn’t because I already verified the installation twice.

Please select what you are reporting on:

Unreal Editor for Fortnite

What Type of Bug are you experiencing?

Other

Steps to Reproduce

Launching UEFN via the shortcut or directly from the Epic Games Launcher

Expected Result

Launching UEFN normally as expected

Observed Result

Error Popup saying verify the installation

Platform(s)

PC

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Screenshot 2026-04-17 194856.png
Screenshot 2026-04-17 194856.png368×291 2.69 KB

2

same issue here, ive seen at least 15 different people with the same issue, havent found a way to fix it

1 Like
3

Such a bummer ;(

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4

if you find anything let me know, ive seen different people with the same issue

1 Like
5

Sure thing :folded_hands:

1 Like
7

same problem here bro i try to fix it but not working the same massage pop up

1 Like
8

hiii I fixed it by uninstalling and reinstalling both fortnite and uefn

1 Like
9

Thanks for letting me know, I will try that now

10

For installation support, please go to https://www.epicgames.com/help/en-US/c-Category_Fortnite for assistance. At the bottom of the page, you’ll find a “Contact Us” button.

11

FORT-1090417 has been ‘Closed’. The issue reported is not caused by a bug in the tool.