1) Incompetent/lazy/understaffed/broke IT departments that cannot or will not adopt a new browser policy 2) Draconian IT policies preventing workers from using

1) Incompetent/lazy/understaffed/broke IT departments that cannot or will not adopt a new browser policy 2) Draconian IT policies preventing workers from using non-approved software 3) Idiotic decision making from last decade to use ActiveX/some other IE6 only feature for some critical applications.