The ActiveX components Visual Studio gives easy access to contain a wealth of time saving reusable components. Unfortunately for some users, the adoption of Windows Vista brought to light a bug in the way Visual Studio (both 2005 and 2008) interact with UAC. In some configurations the COM Components tab, which lets you add these controls to your toolbox, will have either very few entries or non at all. This can lead to a great deal of frustration and wasted time.