I have the a very similar problem and cannot seem to report it on neither the official Unreal Engine bug report form or the crash report window.
Please Note
This is not a normal crash/bug report since i can’t seem to report it in the official Unreal Engine bug report form. The situation is very dire and I really need to solve this issue quickly. This is why I posted the report here.
Another thing to note is that when the crash occurs, the traditional crash report window also freezes and is completely unresponsive. This means that I cannot send the crash report automatically to Unreal staff.
Problem:
I installed the UE 4.26 some time ago and would like to use it for a new project I had in mind. However, every time I create a new project and click anything in the UI, the whole engine freezes. The program is shown as “not responding” in windows task manager and when I try to kill the program from there, my whole windows crashes completely. At this point, nothing can be done and forced reset of the computer is necessary.
Reproduce:
Make a new project in Unreal Engine. Set Graphics settings to scalable 2d/3d and disable starter content. Use the default First Person kit. When the project loads up, click anything in the user interface.
Additional info:
I already tried reinstalling Unreal Engine and Epic Games launcher but the problem still occurs every time I try to create a new project. I haven’t been able to launch a single project succesfully since the problem occured first time. I tried to resolve the problem by searching for similar crash reports from google but wasn’t able to fix it. I have also switched my nvidia gpu from game driver to studio a driver but that didn’t help.
Link to project file (Including crash logs):
https://drive.google.com/drive/folde…wn?usp=sharing
PC specs:
GPU: Geforce GTX 1660Ti
CPU: AMD Ryzen 7 2700x
Ram: 16 Gb DDR4
System: Windows 10 Professional