Many empty windows open after starting the laptop?

Ca
1

I have the problem that after starting my laptop many empty windows open a program unknown to me. Does anyone know this program? What is it's name? (see photo by Icon)

Many empty windows open after starting the laptop

can't click or otherwise interact with these windows. When starting up the car, I have not found this icon synonymous, in Control Panel under "Apps" it is not to be found.

Lo

This is the standard symbol of a Windows Forms application (self-programmed) may be a virus