User Account Control (UAC)

In Windows Vista, User Account Control (UAC) is a feature that was designed to prevent unauthorized changes to your computer. When functions that could potentially affect your computer’s operation are made, UAC will prompt for permission or an administrator’s password before continuing with the task.

UAC Notifications

There are four different alert messages associated with User Account Control:

  • Windows needs your permission to continue
  • A program needs your permission to continue
  • An unidentified program wants access to your computer
  • This program has been blocked

Vangie Beal
Vangie Beal
Vangie Beal is a freelance business and technology writer covering Internet technologies and online business since the late '90s.

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