windows 网络问题

端口未被占用，却无法启动

错误信息：

listen tcp :8888: bind: An attempt was made to access a socket in a way forbidden by its access permissions.

参考：

win11 listen tcp :8888: bind: An attempt was made to access a socket in a way forbidden by its access permissions. - Search (bing.com)

1. 查端口是否被占用

netstat -aon|findstr 80|findstr LISTEN

2. 查看tcp

netsh interface ipv4 show excludedportrange protocol=tcp

3. 查udp

netsh interface ipv4 show excludedportrange protocol=udp