Re: From Microsoft dialog boxes UI guidelines....
Microsoft frequently violate their own guidelines.
Of course, they are only guidelines and not rules but MS have spent a huge amount of research and development time testing and generating these guidelines. Only for other parts of MS to ignore and trash them. Office frequently ignores and violates them, Windows 8 (~metro) is so bad that it frequently violates elementary design and usability guides let alone Microsoft's more specific ones.
It can't be an enjoyable department to work in.