Microsoft officials have said the irritation is an intentional part of the feature. The idea was that users would become so annoyed by prompts that software designers would improve their programs to avoid triggering prompts.
In some ways this reasoning is flawed as many users saw it as a problem with Vista rather than particular programs, and this has helped hurt the system’s image. However, many designers have reacted by changing their programs, most notably so that they don’t require administrator privileges. Microsoft says this not only improves security, but has cut irritation: the number of programs which trigger UAC alerts has dropped from 775,312 to 168,149.