Consider the following scenario:

• You log on to an Active Directory domain from a Windows Vista-based client computer.
• You try to access a business application that is configured to use the Single Sign-On (SSO) feature.

Note: If the application is configured to use the SSO feature, you can access the application without typing your user credentials.
In this scenario, you are prompted to type your user credentials. If you do not enter your credential, you cannot access the application.

This problem occurs if the following conditions are true:

• The user account that you use is a member of the local Administrators group.
• On the Windows Vista-based computer, the User Account Control (UAC) feature is turned on.