Genshin Impact Error Code 4206 is a generic error message that can appear when the user's internet connection isn't functioning as Genshin Impact expects it to. The exact cause of the error message is unclear, but there are a few steps players can take to correct it and get into the game.
Genshin Impact Error Code 4206: How to Fix
Although Genshin Impact developer miHoYo has not explicitly stated as much, users are reporting that Error Code 4206 is tied to their IP addresses. Many players have reported the error either while using a public WiFi network or when booting the game with a virtual private network, or VPN, in use.
As a result, swapping to a private WiFi network or disabling any active VPN should help fix the error. If it doesn't, you may have to reset your internet connection, reboot your machine, or try other network troubleshooting steps to resolve the problem.