What does the error “OpenGL version 2.1 or newer is required” mean?

Obseron versions 2.10 onward require OpenGL 2.1 for the GUI to work and some virtual platform drivers don't support this. Options therefore are:

1. Downgrading back to an older version with the old GUI.
2. Trying to upgrade the driver if the virtual platform does support OpenGL 2.1.
3. Switching to service installation. See Installing Obseron as a service on Windows or Installing Obseron as a service on CentOS 7.

Service installation does not require any GUI components or OpenGL and operates as a Service. All configurations are done by web interface.