User:Pmw57/Minecrafthelp/Troubleshooting/UnknownHostException: session.minecraft.net

= UnknownHostException: session.minecraft.net =

Problem

You can login to Minecraft but when you try to connect to a multiplayer server, you get an error about session.minecraft.net that says:

Internal client error: java.net.UnknownHostException: session.minecraft.net

Sample image: http://img192.imageshack.us/img192/3708/srrorh.jpg

When you ping session.minecraft.net - instead be being told "request timed out" (which is normal and expected), you instead get no response at all. You may see something like:

C:\Users\YourUserName>ping session.minecraft.net Ping request could not find host session.minecraft.net. Please check the name and try again.

Or, you may see a ping response, which indicates that some other server is responding to your ping instead.

Cause

The session.minecraft.net domain is down or has changed, and your existing DNS server still points to the wrong place.

Solution

You can change the DNS server from your ISP's default one to a different one, and try again. Instructions on how to change your DNS server can be found at the page on DNS Addressing - How to Change in Windows 7