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. Under Microsoft Defender Firewall, switch the setting to On.

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. Under Microsoft Defender Firewall, switch the setting to On.

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. Under Microsoft Defender Firewall, switch the setting to On.

You can turn Microsoft Defender Firewall on or off and access advanced Microsoft Defender Firewall options for the following network types: Domain (workplace) networks. Private (trusted) networks. Public (untrusted) networks. If you want to change a setting, select the network type you want to change it on.

Firewall and network protection - You can specify if you want to receive notifications when Microsoft Defender Firewall blocks a new app. You can also configure these notifications differently depending on if the app was blocked on your domain network, your private network, or the public network (internet).

You can use the Real-time protection setting to turn it off temporarily; however, real-time protection will turn back on automatically after a short while to resume protecting your device. While real-time protection is off, files you open or download won’t be scanned for threats.

For more information, see Stay protected with Windows Security. 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.

How to remove malware or viruses from my Windows 10 PC - Microsoft Support. Windows 10. Microsoft Defender Antivirus and Windows Firewall are on your device to help protect it from viruses and other malicious software.