Minecraft Forums

I can't join any multiplayer server (premium and not premium) and every time I try to join this message pops ups:

java.lang.nullpointerexception:group

I don't know what to do!! I've tried loggin out and loggin back in, changing the Minecraft version, trying different servers, even I deleted and reinstalling Minecraft and I just can't join any server.

My Antivirus is AVG and I have Windows 10 x64.

have you used hamachi or mc leaks lately?

Nope.

Quote from redaer»

Nope.

1. Search for CMD and run it as administrator
2. Type in the bar: netsh winsock reset

Quote from zvikorn»

Are you playing on 17w17a
if yes this is a known bug
if not:

1. Search for CMD and run it as administrator
2. Type in the bar: netsh winsock reset

Quote from zvikorn»

Are you playing on 17w17a
if yes this is a known bug
if not:

1. Search for CMD and run it as administrator
2. Type in the bar: netsh winsock reset

The "bug" is on your computer. See point 2 here http://www.minecraftforum.net/forums/support/unmodified-minecraft-client/2827415-1-12-faqs-read-before-posting

Ok, thanks all for the replies! I'm going to try out your ideas and see if they work.

Thanks for all the help!

Thanks Guys! It was AVG and the bug zvikorn said.

Thanks a Lot!