Hi @Dev_Sergey,
Welcome to the Unreal Engine forums
This is a strange one but there are a few things you can check.
- Post-Process Volume - Do you have any of these in your scene?
- HDR - If your monitor is HDR-compatible, try turning it off to see if it makes a difference. (I had this problem before)
- Clean Project - Create a new project and try one of the starter projects (First Person, Third Person, Top Down). Build it to see if the issue is limited to your current project.
- Package Settings - Check if you have modified the package settings. Go to Edit > Project Settings > Packaging (Under Project). If a starter project builds correctly, try comparing your
DefaultGame.ini
with that of the starter project. - Exposure - Did you change any of the settings on the camera regarding exposure?
Hopefully this helps narrow it down.