记录Idea启动报错，address is used:bind

启动报错，重装后也一直报这个错误，也不提示是什么端口被占用，找了很多方法无果。

IDEA官网问题：Critical Internal Error on Startup of IntelliJ IDEA: "Cannot Lock System Folders"

类似问题：https://github.com/docker/for-win/issues/3171

后来查官网也解决不了

google搜索时发现一个方法

问题来源：

hypervisior(Windows 10的Hyper-V虚拟机)，把端口保留了

IDEA需要在端口6942~6991间找到一个可用端口并绑定(bind)

 

解决方案：

enashed commented on Jan 31, 2019  （原链接：https://github.com/docker/for-win/issues/3171#issuecomment-459205576）

 

 

 

@veqryn the workaround worked for me, the steps are:

1. Disable hyper-v (which will required a couple of restarts)
   dism.exe /Online /Disable-Feature:Microsoft-Hyper-V

2. When you finish all the required restarts, reserve the port you want so hyper-v doesn't reserve it back
   netsh int ipv4 add excludedportrange protocol=tcp startport=<端口号> numberofports=1

3. Re-Enable hyper-V (which will require a couple of restart)
   dism.exe /Online /Enable-Feature:Microsoft-Hyper-V /All

when your system is back, you will be able to bind to that port successfully.

 

请把端口号改成6942~6991间的任一个数字