Your problem is already fixed probably, but for the people who are searching for a fix, follow my steps
- Search for CMD and run it as administrator
- Type in the bar:
netsh winsock reset - It should be fixed!
- If it still doesn't work, try contacting Mojang, the creators of Minecraft
My husband is having trouble connecting to my server when i try to open to Lan. It was working yesterday and now after turning both mine and his pc’s off for the night he cant connect.
He keeps getting this error:
java.lang.nullpointerexception: group
Sometimes on my screen i can see that he has joined the game, then a second later it reads that he has left the game. On his screen it just says "Failed to connect to the server disconnected”
Hope someone can help :)
Your problem is already fixed probably, but for the people who are searching for a fix, follow my steps
- Search for CMD and run it as administrator
- Type in the bar:
netsh winsock reset - It should be fixed!
- If it still doesn't work, try contacting Mojang, the creators of Minecraft
If you are playing newer snapshots, This was a recent bug in the 17w14-16
They seem to have finally fixed it in 17w17a/b
It seemed to be related to a number of new additions like advancements and parrots.
Update your server_jar and your minecraft client to 17w17b (current)
If you are getting this issue on 1.11.2 release. Then open a bug report at bugs.mojang.com