Unable to Launch Session RESOLVED

Majorrblues
Mon, 16 Mar 2026 09:21:52 +0000
Issues and Bug Reporting

Summary

For the past few days, I’ve been unable to log in to the session due to a critical internal cook error. This happens when I have the HLODS built for some reason—if I delete them, the session works, but then I can’t use the HLODS. The island is well under downloading and uploading size and currently at a peak of 90k of in-game memory. This error appeared randomly and has happened to me every time since. I hope a solution can be found.

Please select what you are reporting on:

Unreal Editor for Fortnite

What Type of Bug are you experiencing?

Stability

Steps to Reproduce

Build HLODS (Possibily on a medium-size island)

Launch or Push Changes

Wait for the download in-game

Expected Result

I should be able to successfully log into the session, even with the HLODS built, being under the memory limits set by UEFN.

Observed Result

The download fails and I get an error in the game, in the Output and Message Log (images attached below). As a result, I can’t log into the session (with the HLODS built) and proceed with my work.

Platform(s)

PC

Upload an image

8 posts - 5 participants