You have been disconnected from battle.net

Some days it’s fine, Some days You just can’t play Blizzard games.
Just trying to help people. I’ve monitored my connection, The issue is the routing Blizzard uses on their end. As Blizzard will sadly never pay this any mind, my advice to you - Use a VPN. Unless you are a dirty slime ball like me and know what’s going on and have your own “special” fix, a VPN is your best bet. Actually your only bet.
Good luck out there.

Hey there!

We appreciate you taking the time to report this. A VPN can be an extremely useful tool in diagnosing connection problems as it works by bypassing your ISP’s network. That said, if a VPN solves the issues that you’re experiencing, this actually confirms that something isolated to your primary network is causing the issue.

With this in mind, we are more than happy to help isolate the exact cause of the issues that you are experiencing. If the troubleshooting steps here have no impact, our best option will be to have you run a ‘WinMTR’ network test while the problem occurs in-game so that we can further investigate potential network-related issues between your computer and the game server. Here are the instructions:

  1. Download the tool from this page
  2. Enter the game IP into the “host” field. The IP address for our games are listed on the WinMTR instructions page
  3. Start the test and play the game for at least 15 minutes. Ensure the problem happens while the WinMTR tool is running.
  4. After recording the problem data, click “export text” and save the WinMTR file in an easy to find location.
  5. Once you have that made, open the file. You’ll need to copy and paste the contents of the Text document into the post, and put four Tilde (~) marks above the WinMTR. It’ll look like this:
WinMTR goes here

If you have issues pasting here, please use Pastebin and post the link (ex: Pastebin (dot) com/123456).