Windows 8 uses a wide variety of tools to protect you from viruses, malware, and other maliciousapplications that could harm your computer. Many of these services run in the background, so you may not even notice that they're constantly working to keep you safe.
User Account Control User Account Control warns you when a program or user attempts to change your computer's settings. Your screen will be temporarily locked until an Administrator can confirm the changes. This helps to protect your computer against malicious software and accidental changes. User Account Control also allows you to decide how often you'll receive these warnings.
Windows Defender
Windows Defender provides anti-virusand malware protection for your computer. In addition to scanning your computer for potentially harmful applications, Windows Defender also provides real-time protection, double-checking each file or application you open without slowing down your computer.
Whenever your computer detects a security threat from a file or application, Windows SmartScreen will notify you with a full-screen warning. Whenever you see this warning screen, you should choose not to open the file or application unless you can verify that it will not damage your computer.
Windows FirewallBy default, Windows 8 will protect your internet connection with Windows Firewall. A firewall prevents unauthorized access from external connections and helps protect your network from threats that could harm your computer.
[h=3]The Action Center The Action Center is a centralized place to view security and maintenance messages, making it easier to identify and solve problems with your computer. The Action Center can be accessed from Desktop view.
[h=4]Solving Issues with the Action Center: Your current messages are displayed in the Action Center pane. A red bar indicates your most important messages, while a yellow bar indicates those that do not require immediate attention. A button will appear to the right of a message if a solution exists for the security or maintenance issue.
To fix a problem, click the solution button and follow the instructions on the screen. When you are done, the message will disappear from the Action Center.
Resolving issues with the Action Center
Some messages are just notifications and do not indicate a problem with your computer. These messages will not include a solution button, but they may still have important information or instructions.
[h=3]Troubleshooting Not all computer problems will be shown in the Action Center. For example, you may have trouble with a particular program or device or connecting to the internet. For these types of problems, you will want to open the Troubleshooting pane.
To access the Troubleshooting pane, click Troubleshooting at the bottom of the Action Center. You will see several different options that will help you identify and fix problems with your software and hardware.
[h=3]Using System Restore You may occasionally experience problems with your computer after opening certain files or applications from the internet, which can affect your system settings. System Restore is often the easiest way to fix these kinds of issues. System Restore allows you to "rewind" your system settings to an earlier point in time, called a restore point. Keep in mind that a system restore will not erase your recently created files, nor can it be used to recover lost documents or other files. However, it may uninstall recently added applications and drivers.
