• What are the benefits of the new and changed features
  • Who will want to use UAC?




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    Who will want to use UAC?


    UAC helps standard users and administrators protect their computers by preventing programs that may be malicious from running. The improved user experience makes it easier for users to perform daily tasks while protecting their computers.

    UAC helps enterprise administrators protect their network by preventing users from running malicious software.


    What are the benefits of the new and changed features?


    By default, standard users and administrators access resources and run applications in the security context of standard users. When a user logs on to a computer, the system creates an access token for that user. The access token contains information about the level of access that the user is granted, including specific security identifiers (SIDs) and Windows privileges.

    When an administrator logs on, two separate access tokens are created for the user: a standard user access token and an administrator access token. The standard user access token contains the same user-specific information as the administrator access token, but the administrative Windows privileges and SIDs have been removed. The standard user access token is used to start applications that do not perform administrative tasks (standard user applications).



    When the user runs applications that perform administrative tasks (administrator applications), the user is prompted to change or "elevate" the security context from a standard user to an administrator, called Admin Approval Mode. In this mode, the administrator must provide approval for applications to run on the secure desktop with administrative privileges. The improvements to UAC in Windows 7 and Windows Server 2008 R2 result in an improved user experience when configuring and troubleshooting your computer.

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