Error creating GameNetDriver

Unreal Courses Ask
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#1

I keep getting an error when I click the host button:
[2023.12.19-20.40.16:159][686]LogNet: CreateNamedNetDriver failed to create driver from definition GameNetDriver
[2023.12.19-20.40.16:159][686]LogNet: CreateNamedNetDriver failed to create driver GameNetDriver from definition GameNetDriver
[2023.12.19-20.40.16:160][686]LogNet: Error: UEngine::BroadcastNetworkFailure: FailureType = NetDriverCreateFailure, ErrorString = , Driver = NONE
[2023.12.19-20.40.16:160][686]LogNet: Warning: Network Failure: NULL[NetDriverCreateFailure]:
[2023.12.19-20.40.16:160][686]LogNet: NetworkFailure: NetDriverCreateFailure, Error: ‘’
[2023.12.19-20.40.16:161][686]LogNet: Error: LoadMap: failed to Listen(/Game/ThirdPerson/Maps/ThirdPersonMap?Name=Player?listen)

I’ve checked the code against the course, checked the defaultengine.ini, made sure Steam is both active and closed, same error every time. Any help would be appreciated.

#2

Just a few things to Check Stephen.

First, Ensure you’ve included the maps in the package section.
Second, try this with a packaged build.

For steam, it seems some people have issues trying to use steam and the only solution is to use a packaged built. you can run this with -WINDOWED -log and you’ll get a log window in the background. There’s a way to capture the log to a file as well but I can’t remember how.

Give these a try and let me know how you get on.

#3

No, that hasn’t worked. I even deleted the project and recreated it in case I missed a step first time around. Same problem.

Strangely though, I have also done the Sam Pattuzzi Unreal 4 C++ Multiplayer Master course, but in version 5.2, same as this course. I don’t have this problem and the connections work fine.

#4

That’s interesting. It will have something simple missing somewhere.

If you upload your project (zip the folder after deleting intermediate and binaries) to https://gdev.tv/projectupload and I’ll try get to it as soon as I can. May be a few days…

#5
#6

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