我已经遇到这个奇怪的问题好几个月了。
twitter.com 在工作时可以完美运行，但在家里不行。我试过 Google OpenDns，但没用。我试过禁用 DNS 客户端服务，但没用。我不断刷新 DNS 缓存，但也没用。我的电脑上也安装了 ubuntu，twitter.com 在 Ubuntu 上在家里也能正常工作。
Twitter.com 只是一个域名，我在使用其他多个域名时也遇到了这个问题
当我运行 nslookup 时，我得到以下信息：
Server: google-public-dns-a.google.com
Address: 8.8.8.8
Non-authoritative answer:
Name: twitter.com
Addresses: 199.16.156.230
199.16.156.70
199.16.156.6
当我尝试 tracert 时，我得到以下信息：
Tracing route to twitter.com [199.16.156.102]
over a maximum of 30 hops:
1 * * * Request timed out.
2 * * * Request timed out.
3 76 ms 53 ms 68 ms 172.31.32.14
4 * * * Request timed out.
5 * * * Request timed out.
6 157 ms 143 ms 123 ms 46.42.84.234
7 158 ms 148 ms 159 ms 84-235-94-105.saudi.net.sa [84.235.94.105]
8 190 ms 162 ms 123 ms 84-235-120-22.igw.com.sa [84.235.120.22]
9 239 ms 248 ms * 84-235-95-230.saudi.net.sa [84.235.95.230]
10 * * * Request timed out.
11 277 ms 238 ms 254 ms xe-3-0-1.iad1-cr1.twttr.com [199.16.159.127]
12 249 ms 293 ms 273 ms ae50.atl1-er1.twttr.com [199.16.159.73]
13 * * * Request timed out.
14 283 ms 268 ms 248 ms 199.16.156.102
Trace complete.
当我尝试 IE 的诊断时，我收到以下错误消息：
resource (twitter.com) is online but isn't responding to connection attempts. Detected
The remote computer isn’t responding to connections on port 443, possibly due to firewall or security policy settings, or because it might be temporarily unavailable. Windows couldn’t find any problems with the firewall on your computer.
PS：我从 Windows 7 升级而来，在 Windows 7 上从未遇到过这个问题