If you‘re specifically trying to get the last free version working (0.9.8.0), note that it has its own set of compatibility issues, particularly on modern systems.
Versions 0.980 and earlier were distributed as freeware on the official SpaceEngine website. space engine 0990 free download fix
Open AMD Software: Adrenalin Edition and ensure your OpenGL pipeline settings are set to default. If you‘re specifically trying to get the last
Overlays from programs like Discord or NVIDIA GeForce Experience can sometimes cause issues. Try disabling them. space engine 0990 free download fix