What is io.netty.handler.timeout.ReadTimeoutException?

For awhile, I have been receiving the same error after trying to connect to my server: io.netty.handler.timeout.ReadTimeoutException. How do I fix this? And please don't give me a link to the error on Mojang, that doesn't help!

 

It just means your MineCraft client got tired of waiting for your server to respond. Make sure the IP you have and the port are correct, and make sure it's on too.

 

Nateb's answer is good - check basic networking connectivity.

If you want a more detailed explanation, Minecraft switched their networking code to use 'Netty' (a Java library/framework). When the server doesn't respond back the client 'times out'. Normally an app will display a user friendly message but they decided to just report the raw Exception details.

 

Thanks for posting this,was just wondering about message myself.