Check if the client operating system(OS) version and patches meet system requirements.
Check if the correct version of the browser is installed on the client machine.
Check if the browser is properly installed on the matche.
Check the browser settings.
Check with different browsers (e.g., Netscape Navigator versus internet Explorer).
Check with different supported versions of the same browsers(e.g.3.1,3.2,4.2,4.3, etc).
