java.lang.IllegalStateException: failed to create a child event loop

Searched on Google with the first line of a JAVA stack trace?

We can recommend more relevant solutions and speed up debugging when you paste your entire stack trace with the exception message. Try a sample exception.

Recommended solutions based on your search

Samebug tips

Do you know how to solve this issue? Write a tip to help other users and build your expert profile.

Solutions on the web

via massivecraft.com by Unknown author, 1 year ago
failed to create a child event loop
via baidu.com by Unknown author, 1 year ago
via commentcamarche.net by Unknown author, 2 years ago
failed to create a child event loop
via Mojang JIRA by Manuel Hasenmann, 1 year ago
failed to create a child event loop
via microsoft.com by Unknown author, 1 year ago
failed to create a child event loop
via minecraftforum.nl by Unknown author, 1 year ago
java.lang.IllegalStateException: failed to create a child event loop
at sun.nio.ch.Net.connect0(Native Method)
at sun.nio.ch.Net.connect(Net.java:457)
at sun.nio.ch.Net.connect(Net.java:449)
at sun.nio.ch.SocketChannelImpl.connect(SocketChannelImpl.java:647)
at java.nio.channels.SocketChannel.open(SocketChannel.java:189)
at sun.nio.ch.PipeImpl$Initializer$LoopbackConnector.run(PipeImpl.java:130)
at sun.nio.ch.PipeImpl$Initializer.run(PipeImpl.java:83)
at sun.nio.ch.PipeImpl$Initializer.run(PipeImpl.java:68)
at java.security.AccessController.doPrivileged(Native Method)
at sun.nio.ch.PipeImpl.(PipeImpl.java:170)
at sun.nio.ch.SelectorProviderImpl.openPipe(SelectorProviderImpl.java:50)
at java.nio.channels.Pipe.open(Pipe.java:155)
at sun.nio.ch.WindowsSelectorImpl.(WindowsSelectorImpl.java:127)
at sun.nio.ch.WindowsSelectorProvider.openSelector(WindowsSelectorProvider.java:44)
at io.netty.channel.nio.NioEventLoop.openSelector(NioEventLoop.java:126)
at io.netty.channel.nio.NioEventLoop.(NioEventLoop.java:120)
at io.netty.channel.nio.NioEventLoopGroup.newChild(NioEventLoopGroup.java:87)
at io.netty.util.concurrent.MultithreadEventExecutorGroup.(MultithreadEventExecutorGroup.java:64)
at io.netty.channel.MultithreadEventLoopGroup.(MultithreadEventLoopGroup.java:49)
at io.netty.channel.nio.NioEventLoopGroup.(NioEventLoopGroup.java:61)
at io.netty.channel.nio.NioEventLoopGroup.(NioEventLoopGroup.java:52)
at undefined.re.a(SourceFile:44)
at undefined.re.b(SourceFile:41)
at undefined.ur.c(SourceFile:10)
at undefined.rd.a(SourceFile:121)
at undefined.bss.a(SourceFile:1923)
at undefined.bxf.i(SourceFile:172)
at undefined.bxf.a(SourceFile:135)
at undefined.bxe.a(SourceFile:342)
at undefined.bxe.k(SourceFile:405)
at undefined.bxf.k(SourceFile:81)
at undefined.bxe.p(SourceFile:382)
at undefined.bss.r(SourceFile:1480)
at undefined.bss.at(SourceFile:880)
at undefined.bss.a(SourceFile:317)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:483)
at net.minecraft.launchwrapper.Launch.launch(Launch.java:131)

Users with the same issue

Samebug visitor profile picture
Unknown user
Once, 1 year ago
Samebug visitor profile picture
Unknown user
Once, 1 year ago
Samebug visitor profile picture
Unknown user
Once, 1 year ago
Samebug visitor profile picture
Unknown user
Once, 1 year ago
Samebug visitor profile picture
Unknown user
Once, 1 year ago

Write tip

Know the solutions? Share your knowledge to help other developers to debug faster.