Error - AssertionFailed:0

Development Programming & Scripting
1

Hi everyone,

My Unreal Engine 5.2 is crashing pretty much all the time, either when opening a level, or starting to play in the viewport. I tried looking up this error on the internet but doesn’t seem to find anything about it. Posting a crashlog here. Thanks!

Script Stack (0 frames) :

[2023.08.06-15.59.37:904][509]LogWindows: Error: appError called: Assertion failed: 0 [File:D:\build++UE5\Sync\Engine\Source\Runtime\ApplicationCore\Private\Windows\WindowsWindow.cpp] [Line: 219]
Window Creation Failed (Error Code 1158).
Current Process (Handles: 34621, GDI Objects: 32, User Objects: 10000)
Global (GDI Objects: 4944, User Objects: 12516)

My PC:
CPU: AMD RYZEN 9 5900X
GPU: RTX 3090
SSD: SAMSUNG 980
RAM: 64GB

AssertionFailed.log (180.1 KB)

2

Hi filip,

I notice in the log you’re using a plugin for 5.1 in your 5.2 project and telling it to load - have you tried disabling the “ScreenSpaceFogScattering” plugin and seeing if it still happens?

Otherwise, it appears to be a GDI window error which could have various solutions, try things like switching to a single moitor and reducing the size of your editor window.

3

Hey hey,

Thank you for your response and help!

Disabling the plugin helped, at least for now :pray:

thanksss

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