How do i fix this error

General Issues and Bug Reporting
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1

Summary

when i try to Launch session it says-Failed to find a server through matchmaking: Error: errors.com.epicgames.fortnite.invalid_region

Your backend is: Fortnite
Your Build is: ++Fortnite+Release-41.10-CL-55335788
Region: NONE
BuildIdOverride is: 54820372

Please select what you are reporting on:

Unreal Editor for Fortnite

What Type of Bug are you experiencing?

Matchmaking

Steps to Reproduce

so I clicked on the Launch session button and that apeared.

Expected Result

well i would be able to join the game to test it

Observed Result

i got Failed to find a server through matchmaking: Error: errors.com.epicgames.fortnite.invalid_region

Your backend is: Fortnite
Your Build is: ++Fortnite+Release-41.10-CL-55335788
Region: NONE
BuildIdOverride is: 54820372

Platform(s)

UEFF

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Screenshot 2026-06-29 204353.png
Screenshot 2026-06-29 204353.png347×170 6.6 KB

Additional Notes

HELP

2

I have the same problem now! I cannot test my map anymore!!! Please help. @Flak

3

…

Fatal error!

LogNet: - EncryptionFailure
LogBeacon: Beacon close from NMT_Failure InvalidParams
LogBeacon: Verbose: Online Beacon Failure: TransportError. beacon_client_nmt_failure
LogValkyrieBeacon: [3eab] (ValkyrieBeaconClient_14) AValkyrieBeaconClient::OnFailure - We have registered a failure in the Valkyrie beacon.

…

4

Okay, so now the playtest works for me again - I’m not sure what the reason was, but maybe it helped to do a revision control update…

5

It’s unlikely the revision control update helped you here - seems there was a blip in our match making servers that got resolved.

6

Ah, okay. Maybe you have also an idea why the live edit not work for me?

-> UEFN editor stucks in loading the test session - so no live edit is possible!