The loader is failing its pre-flight checks—most commonly a missing or corrupted license or an incompatible graphics driver (for WinCC Advanced/Comfort panels).

About the author: A automation systems integrator with 10+ years of experience in Siemens TIA Portal, PCS 7, and WinCC Open Architecture.

But what exactly is the WinCC Runtime Loader? Is it the application itself, or just a launcher? Why does it sometimes stay running after a project closes?