Firewall blocking online games

In this MiniTool post, we will show you how to check if Firewall is blocking a port. Windows Firewall is a Windows built-in tool that can be used to filter network data transmission to and from on your Windows computer. It can also be used to block suspicious and harmful programs. At times, the Firewall may block some ports or programs accidentally. When you encounter some issues like high ping in games , you can go to check whether the game is blocked by Firewall or whether Firewall is blocking a port.

But how to check if Firewall is blocking a port or a program? In this post, we will show you some guides on how to check if your Firewall is blocking something. You can check your Firewall blocks which ports by using Run or Command Prompt. Here are two guides:. Type control and press Enter to open Control Panel. Sorry to hear that! We'd like to know what's wrong. Please check any which apply: This information isn't relevant to my issue. This article is unclear or poorly written. I have tried the suggested steps but they didn't work.

I'm frustrated by Blizzard's process or policy. Thanks for your feedback! Share This Article. Related Articles Stuck on Fetching CDN Configuration Files Troubleshooting steps to resolve this error Troubleshooting Security Applications Troubleshooting your security programs can resolve issues preventing you from installing or using Blizzard software. Troubleshooting Unarchiver Troubleshooting for players experiencing issues with Unarchiver download and installation.

Click to watch this video in a web browser. English US. Contact Us. Site Map. All games, one app:. Stay Connected:. All trademarks referenced herein are the properties of their respective owners. When a program or game requires access to the Internet or another network computer, it must have access to send information over a network port. A firewall protects a computer from unauthorized access and blocks all unnecessary network ports, which prevents a network program from communicating with another computer.

Select your computers Windows version from the links below, and follow the steps to allow access to a program through the Windows Firewall. If you're trying to allow access to a multiplayer computer game when the game is run, the Windows Firewall prompts you to allow that program to access the Internet.