best would be: "you can't do this because XYZ. cilck here to see docs about how to change it"
you just need to pop a little text on top saying "these settings are controlled by your network admin" or "these settings don't apply because you chose XYZ somewhere else"
UI problem is greying out/disabling stuff and not saying why it's unavaiable
"Details about the upload are not available." this is great UI. because it's just a little line of text, it's in nobody's way, and it explains why you can't see what the hell is happening. not WHY but at least you know it's right. lol