When the router UI is open, log into the device using the credentials provided by your ISP, and then navigate over to the 'NAT Forwarding' section of the interface. You can find an abundance of router-related information at, which we recommend you consult before making any changes to your device's settings. Either could work, depending on your router's exact make and model. You're going to want to open your web browser and type '192.168.0.1' or '192.168.1.1' in the address bar. It's more difficult because you're going to have to access your particular router's settings interface, and it's potentially more problematic because turning it off could cause issues in games other than Battlefront 2. In some cases, this will solve your problem.ĭisabling UPnP is a bit more complicated than any of the above. Replace the 'Alternate DNS server' values with 8.8.4.4Īfterwards, you're going to want to do the same thing with 'Internet Protocol Version 6 (TCP/IPv6), but use 2001:4860:4860::8888 as your Preferred DNS server, and 2001:4860:4860::8844 as your Alternate DNS server.Replace the 'Preferred DNS server' values with 8.8.8.8.Select the 'General' tab in the new window, and then click on the 'Use the following DNS server address' toggle'.Select 'Internet Protocol Version 4 (TCP/IPv4)' and click on the 'Properties' button.Go to the 'Networking' tab and then click on the 'Settings' button.Find the network you're having trouble with in the newly-opened selection window and choose 'Properties' via the right-click menu.Type 'ncpa.cpl' into the newly-opened 'Run' window.Input 'ipconfig/renew' and hit ENTER once the 'release' command is finished.Input 'ipconfig/release' into the black window and hit ENTER.

Hit CTRL + SHIFT + ENTER to open the Command Prompt with admin privileges.

Type 'cmd' into the newly-opened 'Run' window.

This is a simple tip that can help with a wide variety of Internet problems, and it's a good thing to keep in mind if you're unlucky enough to keep stumbling into issues. In most cases, server outage is the main reason you'll come across Error Code 721, but on the off chance you've stumbled into a local problem with your machine, perhaps one of the solutions below will help. The best source of information for this sort of thing is undoubtedly the official Battlefront 2 Twitter, which is usually on top of relevant reports. Your first step should always be to check if the game is down across the board. According to various sources, there's a variety of other reasons you might be dealing with Error Code 721:

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