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  1. Minecraft: Java Edition
  2. MC-97031

Description: Updating screen events java.lang.IllegalStateException: failed to create a child event loop

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    • Icon: Bug Bug
    • Resolution: Duplicate
    • None
    • Minecraft 1.8.9
    • None
    • OS: Windows 8.1 (ver 6.3, arch amd64)
      Java: 1.8.0_25 (by Oracle Corporation)
      Launcher: Minecraft Launcher 1.6.51 (bootstrap 100)
      Minecraft: 1.8.8 (updated Mon Jul 27 03:31:28 PDT 2015)
    • Unconfirmed

      Whenever I would open or create a new world it would crash. I would seriously like some help here, my friends and bf tried their best to help and we could not fix it.

      What I expected to happen was...:
      MC would run like normal

      What actually happened was...:
      MC crashed as I loaded a world/created a new one.

      Steps to Reproduce:
      1. Open MC
      2. Load/Create new world
      3. Crash

      ---- Minecraft Crash Report ----
      // You should try our sister game, Minceraft!

      Time: 2/13/16 11:31 AM
      Description: Updating screen events

      java.lang.IllegalStateException: failed to create a child event loop
      at io.netty.util.concurrent.MultithreadEventExecutorGroup.<init>(MultithreadEventExecutorGroup.java:68)
      at io.netty.channel.MultithreadEventLoopGroup.<init>(MultithreadEventLoopGroup.java:49)
      at io.netty.channel.nio.NioEventLoopGroup.<init>(NioEventLoopGroup.java:61)
      at io.netty.channel.nio.NioEventLoopGroup.<init>(NioEventLoopGroup.java:52)
      at ll$1.a(SourceFile:44)
      at ll$1.b(SourceFile:41)
      at no.c(SourceFile:10)
      at ll.a(SourceFile:121)
      at ave.a(SourceFile:1942)
      at axv.i(SourceFile:172)
      at axv.a(SourceFile:135)
      at axu.a(SourceFile:350)
      at axu.k(SourceFile:413)
      at axv.k(SourceFile:81)
      at axu.p(SourceFile:390)
      at ave.s(SourceFile:1498)
      at ave.av(SourceFile:889)
      at ave.a(SourceFile:325)
      at net.minecraft.client.main.Main.main(SourceFile:124)
      Caused by: io.netty.channel.ChannelException: failed to open a new selector
      at io.netty.channel.nio.NioEventLoop.openSelector(NioEventLoop.java:128)
      at io.netty.channel.nio.NioEventLoop.<init>(NioEventLoop.java:120)
      at io.netty.channel.nio.NioEventLoopGroup.newChild(NioEventLoopGroup.java:87)
      at io.netty.util.concurrent.MultithreadEventExecutorGroup.<init>(MultithreadEventExecutorGroup.java:64)
      ... 18 more
      Caused by: java.io.IOException: Unable to establish loopback connection
      at sun.nio.ch.PipeImpl$Initializer.run(PipeImpl.java:101)
      at sun.nio.ch.PipeImpl$Initializer.run(PipeImpl.java:68)
      at java.security.AccessController.doPrivileged(Native Method)
      at sun.nio.ch.PipeImpl.<init>(PipeImpl.java:170)
      at sun.nio.ch.SelectorProviderImpl.openPipe(SelectorProviderImpl.java:50)
      at java.nio.channels.Pipe.open(Pipe.java:155)
      at sun.nio.ch.WindowsSelectorImpl.<init>(WindowsSelectorImpl.java:127)
      at sun.nio.ch.WindowsSelectorProvider.openSelector(WindowsSelectorProvider.java:44)
      at io.netty.channel.nio.NioEventLoop.openSelector(NioEventLoop.java:126)
      ... 21 more
      Caused by: java.net.SocketException: Unrecognized Windows Sockets error: 10106: socket
      at sun.nio.ch.Net.socket0(Native Method)
      at sun.nio.ch.Net.serverSocket(Net.java:419)
      at sun.nio.ch.ServerSocketChannelImpl.<init>(ServerSocketChannelImpl.java:88)
      at sun.nio.ch.SelectorProviderImpl.openServerSocketChannel(SelectorProviderImpl.java:56)
      at java.nio.channels.ServerSocketChannel.open(ServerSocketChannel.java:108)
      at sun.nio.ch.PipeImpl$Initializer$LoopbackConnector.run(PipeImpl.java:123)
      at sun.nio.ch.PipeImpl$Initializer.run(PipeImpl.java:83)
      ... 29 more

      A detailed walkthrough of the error, its code path and all known details is as follows:
      ---------------------------------------------------------------------------------------

      – Head –
      Stacktrace:
      at io.netty.util.concurrent.MultithreadEventExecutorGroup.<init>(MultithreadEventExecutorGroup.java:68)
      at io.netty.channel.MultithreadEventLoopGroup.<init>(MultithreadEventLoopGroup.java:49)
      at io.netty.channel.nio.NioEventLoopGroup.<init>(NioEventLoopGroup.java:61)
      at io.netty.channel.nio.NioEventLoopGroup.<init>(NioEventLoopGroup.java:52)
      at ll$1.a(SourceFile:44)
      at ll$1.b(SourceFile:41)
      at no.c(SourceFile:10)
      at ll.a(SourceFile:121)
      at ave.a(SourceFile:1942)
      at axv.i(SourceFile:172)
      at axv.a(SourceFile:135)
      at axu.a(SourceFile:350)
      at axu.k(SourceFile:413)
      at axv.k(SourceFile:81)
      at axu.p(SourceFile:390)

      – Affected screen –
      Details:
      Screen name: aya
      Stacktrace:
      at ave.s(SourceFile:1498)
      at ave.av(SourceFile:889)
      at ave.a(SourceFile:325)
      at net.minecraft.client.main.Main.main(SourceFile:124)

      – System Details –
      Details:
      Minecraft Version: 1.8.8
      Operating System: Windows 8.1 (amd64) version 6.3
      Java Version: 1.8.0_25, Oracle Corporation
      Java VM Version: Java HotSpot(TM) 64-Bit Server VM (mixed mode), Oracle Corporation
      Memory: 56760120 bytes (54 MB) / 246026240 bytes (234 MB) up to 1060372480 bytes (1011 MB)
      JVM Flags: 6 total; -XX:HeapDumpPath=MojangTricksIntelDriversForPerformance_javaw.exe_minecraft.exe.heapdump -Xmx1G -XX:+UseConcMarkSweepGC -XX:+CMSIncrementalMode -XX:-UseAdaptiveSizePolicy -Xmn128M
      IntCache: cache: 0, tcache: 0, allocated: 12, tallocated: 94
      Launched Version: 1.8.8
      LWJGL: 2.9.4
      OpenGL: Intel(R) HD Graphics GL version 4.0.0 - Build 10.18.10.3574, Intel
      GL Caps: Using GL 1.3 multitexturing.
      Using GL 1.3 texture combiners.
      Using framebuffer objects because OpenGL 3.0 is supported and separate blending is supported.
      Shaders are available because OpenGL 2.1 is supported.
      VBOs are available because OpenGL 1.5 is supported.

      Using VBOs: No
      Is Modded: Probably not. Jar signature remains and client brand is untouched.
      Type: Client (map_client.txt)
      Resource Packs:
      Current Language: English (US)
      Profiler Position: N/A (disabled)
      CPU: 2x Intel(R) Celeron(R) CPU N2840 @ 2.16GHz

            Unassigned Unassigned
            Scarlet The Devil Aurora Kay
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              Created:
              Updated:
              Resolved: