win10中idea无法打开始终在启动页面

问题描述

昨天使用还是正常的，今天开机打开idea，发现一直卡在启动页面。

出错原因定位

查看idea的日志，默认路径为 C:\Users<用户名>\AppData\Local\JetBrains\IntelliJIdea<版本>\log

我这打开后的往下滑，最新的错误日志为如下内容

2022-05-25 09:58:41,706 [   4882]  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$AsyncSupply.run(CompletableFuture.java:1702)
	at java.base/java.util.concurrent.CompletableFuture$AsyncSupply.exec(CompletableFuture.java:1692)
	at java.base/java.util.concurrent.ForkJoinTask.doExec(ForkJoinTask.java:290)
	at java.base/java.util.concurrent.ForkJoinPool$WorkQueue.topLevelExec(ForkJoinPool.java:1020)
	at java.base/java.util.concurrent.ForkJoinPool.scan(ForkJoinPool.java:1656)
	at java.base/java.util.concurrent.ForkJoinPool.runWorker(ForkJoinPool.java:1594)
	at java.base/java.util.concurrent.ForkJoinWorkerThread.run(ForkJoinWorkerThread.java:183)
Caused by: java.net.BindException: Address already in use: bind
	at java.base/sun.nio.ch.Net.bind0(Native Method)
	at java.base/sun.nio.ch.Net.bind(Net.java:455)
	at java.base/sun.nio.ch.Net.bind(Net.java:447)
	at java.base/sun.nio.ch.ServerSocketChannelImpl.bind(ServerSocketChannelImpl.java:227)
	at io.netty.channel.socket.nio.NioServerSocketChannel.doBind(NioServerSocketChannel.java:134)
	at io.netty.channel.AbstractChannel$AbstractUnsafe.bind(AbstractChannel.java:562)
	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:260)
	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:469)
	at io.netty.channel.nio.NioEventLoop.run(NioEventLoop.java:503)
	at io.netty.util.concurrent.SingleThreadEventExecutor$4.run(SingleThreadEventExecutor.java:986)
	at io.netty.util.internal.ThreadExecutorMap$2.run(ThreadExecutorMap.java:74)
	at io.netty.util.concurrent.FastThreadLocalRunnable.run(FastThreadLocalRunnable.java:30)
	at java.base/java.lang.Thread.run(Thread.java:829)
2022-05-25 09:58:41,722 [   4898]  ERROR - llij.ide.plugins.PluginManager - IntelliJ IDEA 2021.3.2  Build #IU-213.6777.52 
2022-05-25 09:58:41,722 [   4898]  ERROR - llij.ide.plugins.PluginManager - JDK: 11.0.13; VM: OpenJDK 64-Bit Server VM; Vendor: JetBrains s.r.o. 
2022-05-25 09:58:41,722 [   4898]  ERROR - llij.ide.plugins.PluginManager - OS: Windows 10 

问题解决

参考解决方案
参考解决方案-个人使用有效

官方问题描述

如果 6942 到 6991 的 50 个端口被保留、被其他应用占用以及防火墙不允许绑定他们，会报端口占用这个错误

这里我本地查了几个，发现端口没人用啊。
netstat -ano | findstr “6943”

个人-有效方案

// 以管理员方式运行 CMD(win + q 然后输入 cmd,右键，以管理员身份运行)
netsh int ipv4 set dynamicport tcp start=49152 num=16383
netsh int ipv4 set dynamicport udp start=49152 num=16383
// 运行了上面两个，再次尝试打开 idea，还是失败
net stop winnat
net start winnat
// 运行了这两个后，再次尝试打开idea，成功了。

贴图

看这命令，好像是window 的 NAT(网络地址转换)出问题了。