If you are unable to connect to online servers in Diablo 2 Resurrected and get a connection failed error, you can fix it by restarting your PC or your router.
Sometimes both methods will be enough to fix problems connecting your PC to Diablo 2 servers. Also, checking your internet connection and restarting the game can help.
However, one of the first things you should always check is if the servers are down or having issues.
The reason is that if the servers are down, there will be no way to fix them on your end beyond working for Blizzard.
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Because of this, you'll have to wait for servers to eventually come back after Blizzard itself fixes what's causing them.
You can check if the servers are down by checking the game's and company's official social media accounts and by visiting sites like the outage finder.
If you find the servers are down, sit still, grab a snack, or play offline by creating an offline character. Sooner or later the servers will come back and you won't have connection errors anymore.
Be sure to check our Diablo 2 homepage for all the latest news, guides, and information on this classic game!