Press the Search button on the taskbar, type firewall, and then select Windows Defender Firewall. On the left side of the window, select Turn Windows Firewall on or off. Make sure Turn on Windows Defender Firewall is selected for your public or private network settings and then press OK. You may need to restart your PC.

In the File Download dialog box, click Run or Open, and then follow the steps in the Windows Firewall Troubleshooter.

เมื่อต้องการปิดใช้งาน ให้สลับการตั้งค่าเป็น ปิด การปิด ไฟร์วอลล์ของ Microsoft Defender อาจทำให้อุปกรณ์ของคุณ (รวมถึงเครือข่าย ถ้ามี) มีความเสี่ยงต่อการ ...

If Windows 11 isn’t activated on your device, see Get help with Windows activation errors for more info. If you’re not already part of the Windows Insider program and you’d like to join, select the Start button and then select Settings > System > Windows Insider Program > Get started . Join Windows Insider Program

Add Easy Anti-Cheat and the game folder to your firewall exception list, or temporarily disable your firewall. To learn more about adjust firewall settings, go to: Firewall & network protection in Windows Security

If there's an app you need to use that's being blocked, you can allow it through the firewall, instead of turning the firewall off. Note: If you get errors, or if the setting won't turn on, you can use the troubleshooter and then try again.

Double-click the Windows Firewall: Do not allow exceptions setting to enable the setting. Double-click the Windows Firewall: Prohibit unicast response to multicast or broadcast requests setting to enable the setting. Apply these Group Policy settings to a computer that is running Windows Server 2008 R2 or Windows 7.

Press the Search button on the taskbar, type firewall, and then select Windows Defender Firewall. On the left side of the window, select Turn Windows Firewall on or off. Make sure Turn on Windows Defender Firewall is selected for your public or private network settings and then press OK. You may need to restart your PC.

When you open a port in Windows Defender Firewall you allow traffic into or out of your device, as though you drilled a hole in the firewall. This makes your device less secure and might create opportunities for hackers or malware to use one of those openings to get to your files or use your device to spread malware to other devices.

Po vypnutí brány Firewall v programu Microsoft Defender může být zařízení (a také síť, pokud nějakou používáte) zranitelnější vůči neoprávněnému přístupu. Pokud je určitá aplikace, kterou potřebujete používat, blokována, můžete místo vypnutí brány firewall povolit, aby ji brána firewall neblokovala.