How to Fix RTMP Connect Handshake failed for Twitch stream

If you’re trying to stream to Twitch and in OBS UI the streaming button is not lighting up and in OBS log you’re getting errors like:

12:49:18.435: [rtmp stream: 'simple_stream'] Connecting to RTMP URL rtmp://<SERVER>.twitch.tv/app...
12:49:28.744: RTMPSockBuf_Fill, remote host closed connection
12:49:28.744: RTMP_Connect1, handshake failed.
12:49:28.744: [rtmp stream: 'simple_stream'] Connection to rtmp://<SERVER>.twitch.tv/app failed: -2

Try switching your ingest server to something other than default. At least it worked for me.

There is a tool to find the best Twitch ingest server available, just go there from your OBS machine and take the first non-default ingest server.