When launching a session in Unreal Editor, the uploading part is extremely slow and fails most of the time.

[Vector1900]

Summary

Details:

Project size ~700MB takes 25–30 minutes to upload

Sessions fail after long wait times with random errors

Previously this same project launched 5–10x faster

Internet connection is stable (600+ Mbps upload)

Region: UAE

Platform: PC

This is clearly related to a server issue, Europe servers are working totally fine.

This is not a player support issue. It affects development workflow directly and appears to be a backend stability problem.

Another creator has already reported nearly identical behavior recently, so this may not be isolated.

Please select what you are reporting on:

Unreal Editor for Fortnite

What Type of Bug are you experiencing?

Other

Steps to Reproduce

Press Launch Session in UEFN

Expected Result

Should launch within 2-5 minutes

Observed Result

Takes around 20-30 minutes and fails

Platform(s)

PC / Windows

[thrax207]

I’m the author of the other post, I believe mine has been wrongly closed: UEFN Launch Session takes incredibly long all of a sudden - #5 by Bug-Reporter

This is clearly a server side issue of UEFN servers in at least Middle East.
Can someone check this from the epic team? Feel free to reach out to me if you need help replicating.

[thrax207]

I switched to Europe using VPN and it seemed to work for a bit, now today impossible to do launch session. I tried multiple projects of mine and its not working.

We also tried ASIA, same result:

[Vector1900]

@Flak Please take a look at this! Lot’s of issues with Launch Session in UEFN.

[Flak]

Hi @Vector1900

Could we get your UEFN logs after launching a session fails, so we can investigate? Thank you!

[Flak]

How to get your Fortnite logs

At times, we will ask you to send us your logs when you’re having an issue in UEFN. Here is how to do that: UEFN Logs Exit Fortnite. Click on Start or press the Windows Key + R. Type \AppData\Local\UnrealEditorFortnite\Saved\Logs and press Enter. Zip your Logs folder and attach the zip file to your reply. To find UEFN Logs while working in UEFN: Click “Output Log” at the bottom of the window. Click on “Setting” at the top right of the window Click “Open Source Location” Zip your Logs folder…

[Flak]

Fortnite Status

[Bug-Reporter]

FORT-1063426’s status has changed to ‘Ready for QA’. A member of the QA department is investigating the issue.

[thrax207]

This is still happening for me on / off. I can’t find the pattern yet.
I do switch between projects often, perhaps this might mess with the cache or something.
Eventually I get in my session, but I need to press Launch Session 4-5x, takes way to long and hangs often on Initializing, or uploading (takes very long).
Usually I get an error, then just try again, and eventually I get it.