Turn Microsoft Defender Firewall on or off
Learn how to enable or disable Microsoft Defender Firewall on Windows 11 or Windows 10. Find out why it's important to have it on and how to troubleshoot any issues.
Firewall & network protection in Windows Security - Microsoft Support
Firewall & network protection in Windows Security lets you view the status of Microsoft Defender Firewall and see what networks your device is connected to. You can turn Microsoft Defender Firewall on or off and access advanced Microsoft Defender Firewall options for the following network types:
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 everything that tries to enter or exit.
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.
Turn Microsoft Defender Firewall on or off - Microsoft Support
To turn Microsoft Defender Firewall on or off: Select Start , then open Settings . Under Privacy & security , select Windows Security > Firewall & network protection . Open Windows Security settings. Select a network profile: Domain network, Private network, or Public network.
Risks of allowing apps through Windows Defender Firewall
Find out the risks of allowing apps through Windows Defender Firewall and how to add or remove apps from the list of approved apps.
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. Windows Defender Firewall is on by default.
Applies To:
Microsoft Defender on Android, Microsoft Defender on iOS, Microsoft Defender on Mac, Microsoft Defender on Windows, Microsoft Defender Online
Windows Firewall settings are greyed out - Microsoft Support
When you try to change your Windows Firewall settings, the options are greyed out and you can't make any changes. To fix this, follow these steps: Click the Start button, then type Windows Firewall in the Search box.
Device protection in Windows Security - Microsoft Support
For more info about Windows Security, see Stay protected with Windows Security. For more info about Microsoft Defender Firewall, see Turn Microsoft Defender Firewall on or off. For help with your password, see Change or reset your Windows password.
Check your network connection status - Microsoft Support
Select Settings > Network & internet. The status of your network connection will appear at the top. Check your network connection status in Windows.