User Account Control (UAC)
User Account Control (UAC) is a security component that allows an administrator to enter credentials during a non-administrator’s user session to perform occasional administrative tasks.
Tasks that require administrator privileges will trigger a UAC prompt.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
In Windows 2008
1. Click Start, and then click Control Panel.
2. In Control Panel, click User Accounts.
3. In the User Accounts window, click User Accounts.
4. In the User Accounts tasks window, click Turn User Account Control on or off.
5. If UAC is currently configured in Admin Approval Mode, the User Account Control message appears. Click Continue.
6. Clear the Use User Account Control (UAC) to help protect your computer check box, and then click OK.
7. Click Restart Now to apply the change right away, or click Restart Later and close the User Accounts tasks window.
Here is the Microsoft Office Article: http://technet.microsoft.com/en-us/library/cc709691(WS.10).aspx
In Windows 2008 R2 or Windows 7
Using GUI: Follow below steps or in windows explorer bar just type “Control Panel\User Accounts\User Accounts” & press enter – it will take you there. Even in Windows 7 old Vista command works “UserAccountControlSettings.exe“
Also can use belowcommands
run > sedpol.msc > security settings > local policies > security options > Useraccount control
run MSCONFIG and go to the Tools tab > change uac settings
Type UAC in search bar