Win 7 UE 4.4.3 Closes during launch splash screen

Here it is I hope it helps solve this.

Were you able to find a log in folder I mentioned?

this is all there was

Okay, see if there’s one here:

C:\Program Files\Unreal Engine\4.4\Engine\Programs\CrashReportClient\Saved\Logs\

There is no crash report folder

All I see are

Okay, one last thing to look for, please. Follow these instructions about getting Verbose Logs from Launcher:

Just bottom part for Verbose Logs.

Alright, there log. I followed directions step by step.
[1]: 15849-verbose+logs. (160 KB)

Hey Drewseph,

Can you try running UE4Editor.exe from your engine folder? You can find it here:

C:\Program Files\Unreal Engine\4.4\Engine\Binaries\Win64

I ran exe and it closes before getting past initial grey splash screen

Okay, one other source of information that might be helpful for us. Shift + Right-Click in white space in that folder and select “Open command window here”. In Console window that opens, type “UE4Editor.exe -stdout > outputlog.txt” (without quotes). That should create a file named outputlog.txt in that folder. Please attach that as well. I apologize it’s taking some time to get to bottom of this, and appreciate your patience.

Also do a quick check and see if there’s anything here:

C:\Users\<WINDOWS USER>\AppData\Local\UnrealEngine\4.4\Saved\Logs

Okay I checked logs folder and there was a log in there, I attached along with output file

Thank you very much for that information. I’ve sent all of this along to our developers to look at and they will get back to you as soon as they can.

In meantime, if you have another machine to try installing engine on, please try there as well and let us know what happens. Thanks again for your patience!

my only other machine is not strong enough to run engine, its a very underpowered system.

Crashes usually are placed in following location:


Please check if you have folders named like this AppCrash_UE4-[gamename]-[guid]

That folder is empty

Is there any word on when I should hear back from them?

Jaroslaw is looking into issue for you now.

Drewseph, thanks for files. What you’re seeing seems to be a rare problem - possibly related to a particular PC configuration - that I’ve seen posted by someone only once before.

Without further details on what exactly is crashing, it will be impossible to figure out what’s happening. Would you be able to build Editor from Github source code in Debug mode and assist me with debugging this problem?

In meantime, to unblock you, please try disabling UdpMessaging transport as follows:

  1. Open file /Engine/Config/BaseEngine.ini in a text editor, i.e. Notepad

  2. Add following lines at bottom:


This will also disable some other features in Editor, particularly UFE related functionality, such as profiling, but you won’t need that in beginning. Hopefully we can figure out what’s going on.

Another thing you can try is this: if your PC is not connected to a wired network (i.e. only WiFi), please try connecting it by wire to a switch, router or internet gateway. Please let me know if that makes a difference, thanks!

gmpreussner ,

I’ll try to figure out how to get source code. I’ve never done something like this though, but there’s always a first time. Is there a guide available on how to do this?

I’ll try those changes to ini as soon as I get back.

I am not able to connect via wire to internet, wifi is only option here.