I upgraded from Win 8 to 8.1 on my Sony Vaio S15 laptop and everything seemed to go fine. The only problem was that text was displaying oddly. I noticed that Sony had an updated Win 8.1 NVidia ...

Comctl32.dll (Common Controls Library) is a part of the Windows operating system, and provides controls and functions for applications, like buttons, menus, scrollbars, etc.