# 无法连接故障排查 2

#### 部分人用在使用时开启了代理,延迟测试不通过,显示为-1ms或者是timeout

#### 导致此情况的原因一般有:系统HOST文件被篡改,DNS污染等,节点故障

## 解决方案：

### 1.HOST文件被篡改

打开 C:\Windows\System32\drivers\etc 下的 hosts 文件

将文件内每一行都加上 "#" 注释掉，亦或者可以直接删除hosts文件

### 2.DNS污染

可能是设置或者是国产垃圾软件篡改了DNS导致DNS服务异常自行更换即可

建议使用谷歌/阿里的DNS

更换完DNS记得清空DNS缓存亦或者重启电脑，不然新的DNS对于已经有DNS缓存的记录不会生效

### 3.节点故障

先行更新订阅后，尝试再连接该节点无果后，只能等待节点维修完毕，在此期间请尝试其他节点


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