Regardless of the user account type the system first

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Regardless of the user account type, the system first attempts to perform any action using standard user privileges. If standard user rights are not sufficient to perform a task, UAC requests privilege elevation : o The standard user is prompted to provide administrator user credentials (username and password). This process is referred to as Prompt for credentials . o The administrator user is asked whether the requested task should be allowed. Because the administrator has already logged on with an administrator username and password, this is a simple Continue or Cancel question. This process is referred to as Prompt for consent . Actions that require elevated credentials are typically indicated in the interface with a shield icon. Prompting for credentials or consent activates the Secure Desktop. With the Secure Desktop, the desktop and all active applications are darkened, and the prompt appears over the shaded desktop. You must respond to the prompt before you can continue with the requested operation or return to the desktop. If you disable the Secure Desktop, the prompt is still shown, but the desktop is not dimmed (or locked), allowing you to work with the desktop without responding to the prompt. To manage UAC settings, go to User Accounts in the Control Panel. You can use the slider displayed to select one of the following UAC configurations: Setting Description Always notify When configured to always notify: o Notification occurs when programs make changes o Notification occurs when you make changes o The desktop is dimmed (Secure Desktop is enabled) Notify me only when programs try to make changes to my computer When configured to notify for program changes: o Notification occurs when programs make changes o Notification does not occur when you make changes o The desktop is dimmed (Secure Desktop is enabled) This is the default setting. Notify me only when programs try to make changes to my computer (do not dim my desktop) When configured to notify for program changes without dimming the desktop: o Notification occurs when programs make changes o Notification does not occur when you make changes o The desktop is not dimmed (Secure Desktop is disabled) This setting is recommended only if it takes a long time to dim the desktop.
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Never notify When configured to never notify, UAC is disabled. No notification occurs and the Secure Desktop is disabled. Additional control over how UAC functions is provided using Local Security policies (located under Local Policies > Security Options). You can configure the following policies: o Use Admin Approval Mode for the built-in Administrator account o Allow UIAccess applications to prompt for elevation without using the secure desktop o Behavior of the elevation prompt for administrators in Admin Approval Mode o Behavior of the elevation prompt for standard users o Detect application installations and prompt for elevation o Only elevate executable files that are signed and validated o
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