idea启动报错：Address already in use: bind，解决方法
报错信息
启动idea 2020.3.2版本莫名报如下错误：
Internal error. Please refer to http://jb.gg/ide/critical-startup-errorsjava.util.concurrent.CompletionException: java.net.BindException: Address already in use: bindat 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.lang.Thread.run(Thread.java:834)
Caused by: java.net.BindException: Address already in use: bindat 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
JRE 11.0.6+8-b765.25 amd64 by JetBrains s.r.o
D:\\Program Files\\JetBrains\\IntelliJ IDEA 2020.1\\jbr解决方法
以管理员身份运行cmd，依次执行以下命令：
netsh int ipv4 set dynamicport tcp start=49152 num=16383
netsh int ipv4 set dynamicport udp start=49152 num=16383
net stop winnat
net start winnat