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:
