在提出问题前请先自行排除服务器端问题，同时也请通过搜索确认是否有人提出过相同问题。

正常启动v2rayN.exe, 可以访问youtube

正常启动v2rayN.exe，访问https://www.youtube.com，返回 无法访问此网站

1.打开全局模式，无法访问外网 2.打开PAC模式，无法访问外网 3.重启客户端，无法访问外网

客户端Win10、服务器阿里云CentOS 7

故障排查： “”“ 检查服务器（可以通过SSH连接，IP地址可以ping通） ”“” 客户端information: “”" 2019/10/29 19:41:51 tcp:127.0.0.1:58467 accepted tcp:www.google.com:443 2019/10/29 19:41:51 tcp:127.0.0.1:58469 accepted tcp:www.google.com:443 2019/10/29 19:41:51 tcp:127.0.0.1:58471 accepted tcp:www.google.com:443 2019/10/29 19:41:55 [Warning] failed to handler mux client connection > v2ray.com/core/proxy/vmess/outbound: failed to find an available destination > v2ray.com/core/common/retry: [dial tcp 47.240.21.139:28531: i/o timeout] > v2ray.com/core/common/retry: all retry attempts failed 2019/10/29 19:41:56 tcp:127.0.0.1:58476 accepted tcp:www.youtube.com:443 2019/10/29 19:41:56 tcp:127.0.0.1:58477 accepted tcp:yt3.ggpht.com:443 2019/10/29 19:41:57 tcp:127.0.0.1:58479 accepted tcp:www.youtube.com:443 2019/10/29 19:42:01 tcp:127.0.0.1:58485 accepted tcp:clients1.google.com:443 2019/10/29 19:42:03 tcp:127.0.0.1:58489 accepted tcp:www.youtube.com:443 2019/10/29 19:42:10 tcp:127.0.0.1:58501 accepted tcp:chrome-devtools-frontend.appspot.com:443 2019/10/29 19:42:11 tcp:127.0.0.1:58504 accepted tcp:clients2.google.com:443 2019/10/29 19:42:13 tcp:127.0.0.1:58508 accepted tcp:clients4.google.com:443 2019/10/29 19:42:13 tcp:127.0.0.1:58510 accepted tcp:clients1.google.com:443 2019/10/29 19:42:26 tcp:127.0.0.1:58527 accepted tcp:www.google.com:443 2019/10/29 19:42:26 tcp:127.0.0.1:58528 accepted tcp:i.ytimg.com:443 2019/10/29 19:42:26 tcp:127.0.0.1:58531 accepted tcp:www.youtube.com:443 2019/10/29 19:42:26 tcp:127.0.0.1:58532 accepted tcp:lh3.googleusercontent.com:443 2019/10/29 19:42:27 tcp:127.0.0.1:58536 accepted tcp:www.youtube.com:443 2019/10/29 19:42:40 tcp:127.0.0.1:58541 accepted tcp:clients1.google.com:443 2019/10/29 19:43:01 tcp:127.0.0.1:58545 accepted tcp:clients1.google.com:443 2019/10/29 19:43:01 tcp:127.0.0.1:58547 accepted tcp:www.google.com:443 2019/10/29 19:43:13 [Warning] failed to handler mux client connection > v2ray.com/core/proxy/vmess/outbound: failed to find an available destination > v2ray.com/core/common/retry: [dial tcp 47.240.21.139:28531: i/o timeout] > v2ray.com/core/common/retry: all retry attempts failed 2019/10/29 19:43:19 [Warning] failed to handler mux client connection > v2ray.com/core/proxy/vmess/outbound: failed to find an available destination > v2ray.com/core/common/retry: [dial tcp 47.240.21.139:28531: i/o timeout] > v2ray.com/core/common/retry: all retry attempts failed 2019/10/29 19:43:40 tcp:127.0.0.1:58552 accepted tcp:clients1.google.com:443 2019/10/29 19:44:51 tcp:127.0.0.1:58566 accepted tcp:docs.google.com:443 2019/10/29 19:44:51 tcp:127.0.0.1:58569 accepted tcp:docs.google.com:443 2019/10/29 19:44:51 tcp:127.0.0.1:58571 accepted tcp:docs.google.com:443 """