Minecraft Forums

Whenever I try to join any Multiplayer servers, I get this error.

Failed to login: java.net.Socket.Exeption: Address family not supported by protocol family connect

I've searched around... But I can't seem to find a cure. I'm running on a unmodified client, yesterday everything was working fine.

Can someone help?

PS: I've never seen this error before 1.5.2 came... but I have been playing multiplayer in 1.5.2, it worked fine until now.

Quote from Tedster

Please try launching the launcher with this code:

java -Djava.net.preferIPv4Stack=true -jar minecraft.exe

Not sure how?
Here's the guide:

1) Open Notepad and copy the above code in - entirely - and put nothing else in it. Don't format it.
2) Click on File>Save As
3) Change Save as type from 'Text Documents (*.txt)' to 'All Files (*.*)
4) Set the File Name to minecraft.bat
5) Save the batfile where your minecraft.exe is.
6) Double-click the batfile and see if the launcher works

If this doesn't fix your problem, which antivirus/firewalls are you using?
Please quote me when replying.

Thanks for the help, Tedster, I really appreciate it. This was a success, it worked. Thank you so much!