What is a Firewall? - Microsoft Support
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 …
Stay protected with Windows Security - Microsoft Support
Firewall & network protection - Manage firewall settings and monitor what’s happening with your networks and internet connections. App & browser control - Update settings for Microsoft …
Protect my PC from viruses - Microsoft Support
This article is about ways to protect your PC from viruses that can screw up your computer, or allow criminals to steal your data, personal information, or money. Use an anti-malware app - …
Can't turn on the Windows Firewall in the Security Center
Security Center can't turn on Windows Firewall. In the Services console, you notice that the Windows Firewall service is not running even if the service is configured to start automatically. …
Getting started with Microsoft Defender - Microsoft Support
Windows Defender Firewall is firewall software built into Windows that controls which network traffic is allowed, or blocked, from passing to or from your computer across the network. …
Device protection in Windows Security - Microsoft Support
Learn how to access Windows device security settings in Windows Security to help protect your device from malicious software.
How to prevent and remove viruses and other malware
How to protect your computer against malware. There are actions that you can take to help protect your computer against malware. Turn on the firewall. Confirm that the Windows firewall …
Automatically diagnose and fix problems with Windows Firewall
Automatically repair Windows Firewall problems, such as Windows fails to start Windows Firewall service (0x5) or Windows remote assistance is not working.
Keep your computer secure at home - Microsoft Support
Keeping your computer secure helps you avoid malware and direct hacking attempts designed to steal your personal information. Here are some ways you can help reduce your online risk …
Microsoft security help and learning
Get security info and tips about threat prevention, detection, and troubleshooting. Including tech support scams, phishing, and malware.