It seems that a small band of Surface Pro users have discovered to their horror that the stylus itself is non-functional after a while. Statistics dictate that this could very well be an odd anomaly, but Microsoft is not going to cut corners and will look into the matter. So far, only a few reports in the Microsoft Answers forums have been posted, but nobody has managed to figure out a fix or the cause behind this issue. Alas, the traditional method of uninstalling and reinstalling the drivers result in a temporary fix, only. Hopefully an upcoming update might be able to ensure that such stylus woes are no more.