Remote Desktop Gateway server is temporarily unavailable

I am currently building a Remote Desktop Server paired with a Remote Desktop Gateway and I ran into this error:

“Your computer can’t connect to the remote computer because the Remote Desktop Gateway server is temporarily unavailable.”

After troubleshooting a bit, I found that the error occurs if you have multiple sites binded in IIS to your Port 443. Make sure you have ONE site binded to 443 and you’ll be good to go!

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