The HTTP::BrowserDetect module provides methods for detecting the os and browser. The distinction could at least be used to redirect or inline branch users of technically unsupportable platforms (whatever they might be ;)) to provide them with a reduced-service version of your site.

;)Although, in practice, in the corporate Windows environment I would be also tempted to let the problem happen and cry non-responsibility for Microsoft problems ... "I can't help it if the corporate standard is to choose a browser that has faults I can't support ;)"