IDEA 日志路径``C:\Users\xxx\AppData\Local\JetBrains\IntelliJIdea2020.2\log\idea.log``
具体报错如下:
```bash
2020-09-13 12:00:49,208 [ 6690] ERROR - llij.ide.plugins.PluginManager - java.net.BindException: Address already in use: bind
java.util.concurrent.CompletionException: java.net.BindException: Address already in use: bind
at java.base/java.util.concurrent.CompletableFuture.encodeThrowable(CompletableFuture.java:314)
at java.base/java.util.concurrent.CompletableFuture.completeThrowable(CompletableFuture.java:319)
at java.base/java.util.concurrent.CompletableFuture$AsyncSupply.run(CompletableFuture.java:1702)
at java.base/java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1128)
at java.base/java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:628)
at java.base/java.util.concurrent.Executors$PrivilegedThreadFactory$1$1.run(Executors.java:668)
at java.base/java.util.concurrent.Executors$PrivilegedThreadFactory$1$1.run(Executors.java:665)
at java.base/java.security.AccessController.doPrivileged(Native Method)
at java.base/java.util.concurrent.Executors$PrivilegedThreadFactory$1.run(Executors.java:665)
at java.base/java.lang.Thread.run(Thread.java:834)
Caused by: java.net.BindException: Address already in use: bind
at java.base/sun.nio.ch.Net.bind0(Native Method)
at java.base/sun.nio.ch.Net.bind(Net.java:455)
at java.base/sun.nio.ch.Net.bind(Net.java:447)
at java.base/sun.nio.ch.ServerSocketChannelImpl.bind(ServerSocketChannelImpl.java:227)
at io.netty.channel.socket.nio.NioServerSocketChannel.doBind(NioServerSocketChannel.java:134)
at io.netty.channel.AbstractChannel$AbstractUnsafe.bind(AbstractChannel.java:550)
at io.netty.channel.DefaultChannelPipeline$HeadContext.bind(DefaultChannelPipeline.java:1334)
at io.netty.channel.AbstractChannelHandlerContext.invokeBind(AbstractChannelHandlerContext.java:506)
at io.netty.channel.AbstractChannelHandlerContext.bind(AbstractChannelHandlerContext.java:491)
at io.netty.channel.DefaultChannelPipeline.bind(DefaultChannelPipeline.java:973)
at io.netty.channel.AbstractChannel.bind(AbstractChannel.java:248)
at io.netty.bootstrap.AbstractBootstrap$2.run(AbstractBootstrap.java:356)
at io.netty.util.concurrent.AbstractEventExecutor.safeExecute(AbstractEventExecutor.java:164)
at io.netty.util.concurrent.SingleThreadEventExecutor.runAllTasks(SingleThreadEventExecutor.java:472)
at io.netty.channel.nio.NioEventLoop.run(NioEventLoop.java:500)
at io.netty.util.concurrent.SingleThreadEventExecutor$4.run(SingleThreadEventExecutor.java:989)
at io.netty.util.internal.ThreadExecutorMap$2.run(ThreadExecutorMap.java:74)
at io.netty.util.concurrent.FastThreadLocalRunnable.run(FastThreadLocalRunnable.java:30)
... 1 more
```
## 参考
- [Critical Internal Error on Startup of IntelliJ IDEA: "Cannot Lock System Folders"](https://intellij-support.jetbrains.com/hc/en-us/community/posts/360004973960-Critical-Internal-Error-on-Startup-of-IntelliJ-IDEA-Cannot-Lock-System-Folders-)
- [Start Failed, Internal error: recovering IDE to the working state after the critical startup error](https://intellij-support.jetbrains.com/hc/en-us/articles/360007568559?page=1#comment_360001282960)
- [Unable to bind ports: Docker-for-Windows & Hyper-V excluding but not using important port ranges #3171](https://github.com/docker/for-win/issues/3171)
## 原因
原因应该是IDEA使用的一批端口范围刚好被``Hyper-V``排除了
## 解决办法
本人最终解决办法记录一下
- 1.先关闭了 Hyper-V
```bash
dism.exe /Online /Disable-Feature:Microsoft-Hyper-V
```
> 如果需要打开,使用:``dism.exe /Online /Enable-Feature:Microsoft-Hyper-V /All``
- 2.重启 winsock
```bash
netsh winsock reset
```
## 补充
10-1节后,笔者又遇到了一次这种情况。。上述方法各种尝试无效,最终通过重新安装 IDEA 得以解决~

记一次 IDEA 莫名其妙的打开失败 Address already in use: bind