RTMPSockBuf_Fill, remote host closed connection

OBS Pop up message:

Could not access the specified channel or stream key. This could be because the key/channel is invalid, or because the server still thinks you are logged in.

RTMPSockBuf_Fill, remote host closed connection

Steps to take to fix this issue:

• Reset your stream key
  
  • Go to Dashboard on Twitch and click on option "Stream Key"
  • Click button "show key", then "I understand"
  • Copy the new stream key
  • Go to OBS, Settings, Broadcast Settings
  • Paste the key into Play Path/Stream Key section, then apply and ok
  • Try go to live and see if that worked
• Disable all firewall programs
  
  • Sometimes firewall programs will block obs from working correctly
  • Disable any firewall / malware program and see if it works
• Make another Twitch account, use other key
  
  • Create another twitch account and use that key in obs
  • This will determine if your main account is locked up
  • Locking up is rare to happen but it has occurred a couple times for my account.
• Verify your network connection / Internet is working correctly.
  
  • Check your upload speed
  • Run the Twitch Bandwidth Testing tool