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User Account Control

User Account Control (UAC) helps defend your PC against hackers and malicious software. Any time a program wants to make a major change to your computer, UAC lets you know and asks for permission.

In Windows 7, UAC is now less intrusive and more flexible. Fewer Windows 7 programs and tasks require your consent. If you have administrator privileges on your PC, you can also fine-tune UAC's notification settings in Control Panel.

Picture of User Account Control
In Windows 7, you can determine how often UAC notifies you of changes to your PC.