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Standard users can view the clock and change the time zone, but a full administrator access token is required to change the local system time. The shield icon on the Change date and time button indicates that the process requires a full administrator access token and will display a UAC elevation prompt. The elevation process is further secured by directing the prompt to the secure desktop. The consent and credential prompts are displayed on the secure desktop by default in Windows 10 and Windows Only Windows processes can access the secure desktop.

For higher levels of security, we recommend keeping the User Account Control: Switch to the secure desktop when prompting for elevation policy setting enabled. When an executable file requests elevation, the interactive desktop, also called the user desktop, is switched to the secure desktop. The secure desktop dims the user desktop and displays an elevation prompt that must be responded to before continuing.

When the user clicks Yes or No , the desktop switches back to the user desktop. Malware can present an imitation of the secure desktop, but when the User Account Control: Behavior of the elevation prompt for administrators in Admin Approval Mode policy setting is set to Prompt for consent , the malware does not gain elevation if the user clicks Yes on the imitation.

If the policy setting is set to Prompt for credentials , malware imitating the credential prompt may be able to gather the credentials from the user. However, the malware does not gain elevated privilege and the system has other protections that mitigate malware from taking control of the user interface even with a harvested password.

While malware could present an imitation of the secure desktop, this issue cannot occur unless a user previously installed the malware on the PC. Because processes requiring an administrator access token cannot silently install when UAC is enabled, the user must explicitly provide consent by clicking Yes or by providing administrator credentials. User performs operation requiring privilege If the operation changes the file system or registry, Virtualization is called.

All other operations call ShellExecute. If it receives the error, ShellExecute calls the Application Information service to attempt to perform the requested task with the elevated prompt. System Component Description Application Information service A system service that helps start apps that require one or more elevated privileges or user rights to run, such as local administrative tasks, and apps that require higher integrity levels.

The Application Information service helps start such apps by creating a new process for the application with an administrative user's full access token when elevation is required and depending on Group Policy consent is given by the user to do so.

Always notify will: Notify you when programs try to install software or make changes to your computer. Notify you when you make changes to Windows settings. Freeze other tasks until you respond. Recommended if you often install new software or visit unfamiliar websites.

Notify me only when programs try to make changes to my computer will: Notify you when programs try to install software or make changes to your computer. Not notify you when you make changes to Windows settings. Recommended if you do not often install apps or visit unfamiliar websites. Notify me only when programs try to make changes to my computer do not dim my desktop will: Notify you when programs try to install software or make changes to your computer.

Not freeze other tasks until you respond. Not recommended. Choose this only if it takes a long time to dim the desktop on your computer. Never notify Disable UAC prompts will: Not notify you when programs try to install software or make changes to your computer. Not recommended due to security concerns. Secure desktop enabled The User Account Control: Switch to the secure desktop when prompting for elevation policy setting is checked: If the secure desktop is enabled, all elevation requests go to the secure desktop regardless of prompt behavior policy settings for administrators and standard users.

If the secure desktop is not enabled, all elevation requests go to the interactive user's desktop, and the per-user settings for administrators and standard users are used. The file is then inspected to determine its requested execution level, which is stored in the application manifest for the file. AppCompat The AppCompat database stores information in the application compatibility fix entries for an application.

Fusion The Fusion database stores information from application manifests that describe the applications. The manifest schema is updated to add a new requested execution level field. Installer detection Installer detection detects setup files, which helps prevent installations from being run without the user's knowledge and consent.

Kernel Component Description Virtualization Virtualization technology ensures that non-compliant apps do not silently fail to run or fail in a way that the cause cannot be determined. UAC also provides file and registry virtualization and logging for applications that write to protected areas. File system and registry The per-user file and registry virtualization redirects per-computer registry and file write requests to equivalent per-user locations.

Read requests are redirected to the virtualized per-user location first and to the per-computer location second. The slider will never turn UAC completely off. If you set it to Never notify , it will:. Because system administrators in enterprise environments attempt to secure systems, many line-of-business LOB applications are designed to use only a standard user access token. As a result, you do not need to replace the majority of apps when UAC is turned on.

Windows 10 and Windows 11 include file and registry virtualization technology for apps that are not UAC-compliant and that require an administrator's access token to run correctly.

The User Access Control settings help prevent potentially harmful programs and software from making changes to your device. If you've received a To set this linker option programmatically. About User Account Control settings. Windows 7 Windows 8.

Move the slider to select how much you want User Account Control to You are logged in with a user that is a member of the local administrators group. You are attempting to run various admin tools mmc, Device Manager, When you try to repair an application that had already been installed before update was applied, a User Account Control UAC dialog box appears Re: UAC - Elevation prompt for standard users this worked for me thx , how do I stop something like chrome from installing , as when I cancel admin Adjust the UAC settings.

In Windows Windows displays such program icons with the UAC shield overlay. If all paths of a wizard and page flow require elevation, display the UAC shield at the task's entry point. Proper use of the UAC shield helps users predict when elevation is required. If your program supports multiple versions of Windows, display the UAC shield if at least one version requires elevation. Don't display the UAC shield for tasks that don't require elevation in most contexts.

Because this approach will sometimes be misleading, the preferred approach is to use a properly shielded contextual command instead. Because the New folder command requires elevation only when used in system folders, it is displayed without a UAC shield. Because tasks don't remember elevated states, don't change the UAC shield to reflect state. Consistently displaying the UAC shield is easier to program, and provides users with information about the nature of the task.

Whenever possible, design tasks to be performed by Standard users without elevation. Elevate on a per task basis, not on a per setting basis. Don't mix Standard user settings with administrative settings in a single page or dialog box.

For example, if Standard users can change some but not all settings, split those settings out as a separate UI surface. In this example, the settings for changing the date and time are in a separate dialog box, available only to administrators. The time zone settings are available to Standard users, and are not mixed with administrative settings.

Don't consider the need to elevate when determining if a control should be displayed or disabled. This is because:. Don't display an error message when tasks fail because users chose not to elevate.

Assume that users intentionally chose not to proceed, so they won't regard this situation as an error. In this example, Fabrikam Restore incorrectly gives an error message when the user decides to not elevate.

Don't display warnings to explain that users might need to elevate their privileges to perform tasks. Let users discover this fact on their own.

In this example, User Account Control has been turned off so an error message explains that the user must use an administrator account. Skip to main content. This browser is no longer supported.

Download Microsoft Edge More info. Contents Exit focus mode. Is this page helpful? Please rate your experience Yes No. Any additional feedback? Note This design guide was created for Windows 7 and has not been updated for newer versions of Windows.