Learn how to turn the Windows Firewall on or off using the Windows Security app.

A firewall is what controls what is - and more importantly isn't - allowed to pass through those ports. You can think of it like a security guard standing at the door, checking the ID of everything that tries to …

It includes features such as Microsoft Defender Antivirus, Windows Firewall, and Smart App Control, which work together to provide real-time protection against viruses, malware, and other security threats.

Windows Security is built into Windows and provides real-time malware detection, prevention, and removal with cloud-delivered protection. It is intended for home, small business, and enterprise …

Learn how to use virus and threat protection options in Windows Security to scan your device for threats and view the results.

With features like Microsoft Defender Antivirus, Windows Firewall, and Smart App Control, you can easily access and configure robust security settings. Built into Windows, this app ensures your …

The settings page of the Windows Security app allows you to configure security providers, notifications, and determine the version of the app. The page is divided into the following sections:

You can now make changes to your Windows Firewall settings. Note: If the Change settings button is still greyed out, your administrator may have disabled the option for you to change the settings.

Oct 14, 2025 · Follow these steps to automatically diagnose and repair Windows security problems by turning on UAC, DEP protection, Windows Firewall, and other Windows security options and features.

Learn how to protect your Windows devices and personal data from viruses, malware, or malicious attacks.