In windows OS administrator can set user control for changes and unauthorized user. UAC is a security feature of Windows Vista, Windows 7 and Windows 8 which helps prevent unauthorized changes to your computer. These changes can be initiated by applications, viruses or other users. User Account Control makes sure these changes are made only with approval from the administrator.
They have the same permissions a normal user account has: they cannot make any changes to the operating system, its system files or the machine’s registry settings. Also, they cannot change anything that’s owned by other user accounts. Applications can change only their own files and registry settings.
Follow below step to control the UAC in windows
1. Open Control Panel
2. Click in User Accounts and then also click User Accounts
3. Now choose Change User Account Control settings.
4. For turn off UAC control
· Move the slider to the Never notify position, and then click OK
· To turn on UAC, move the slider to choose when you want to be notified, and then click OK
You’re prompted for an administrator password or confirmation, type the password or provide confirmation.