You log on to Windows Vista as a standard user and then you try to perform one of the following actions:

• You right-click a program or a task and then click Run as administrator.
• You start a program or a task that usually requires elevated administrator permissions to continue.

When you perform either of these actions, the task may not be completed successfully, and unexpected behavior may occur. The unexpected behavior may include the following:

• The User Account Control window does not appear as expected. You are not prompted for the administrator password to continue.
• You do not receive an error message that states that you do not have sufficient permissions to perform the action.