Rfactor Config.Exe does not open.

So my friend has a problem, that at the time of installing DX9, after completing the installation, the rfactor config appears but instantly closes, or he tries to open the rfactor Config.exe and the same thing happens, and he also tries to open the rfactor.exe , then the game opens but soon after it closes by itself. Can anyone help me help my friend?
 
So my friend has a problem, that at the time of installing DX9, after completing the installation, the rfactor config appears but instantly closes, or he tries to open the rfactor Config.exe and the same thing happens, and he also tries to open the rfactor.exe , then the game opens but soon after it closes by itself. Can anyone help me help my friend?
Anyone?
 
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