Tasks That Trigger A UAC Prompt
Tasks that require administrator privileges will trigger a UAC prompt (if UAC is enabled); they are typically marked by a security shield icon with the 4 colors of the Windows logo (in Vista and Windows Server 2008) or with two panels yellow and two blue (Windows 7 and Server 2008 R2). In the case of executable files, the icon will have a security shield overlay. The following tasks require administrator privileges:
- Running an Application as an Administrator
- Changes to system-wide settings or to files in %SystemRoot% or %ProgramFiles%
- Installing and uninstalling applications
- Installing device drivers
- Installing ActiveX controls
- Changing settings for Windows Firewall
- Changing UAC settings
- Configuring Windows Update
- Adding or removing user accounts
- Changing a user’s account type
- Configuring Parental Controls
- Running Task Scheduler
- Restoring backed-up system files
- Viewing or changing another user’s folders and files
- Running Disk Defragmenter
Common tasks, such as changing the time zone, do not require administrator privileges (although changing the system time itself does, since the system time is commonly used in security protocols such as Kerberos). A number of tasks that required administrator privileges in earlier versions of Windows, such as installing critical Windows updates, no longer do so in Vista. Any program can be run as administrator by right-clicking its icon and clicking "Run as administrator", except MSI or MSU packages as, due to their nature, if administrator rights will be required a prompt will usually be shown. Should this fail, the only workaround is to run a Command Prompt as an administrator and launch the MSI or MSP package from there.
Read more about this topic: User Account Control
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