无法打开anaconda jupyter笔记本:networking错误(dns_unresolved_hostname)

在我的Windows 7 64位上,我在C:\ Anaconda3中安装了Anaconda3 v4.4.0。 现在,启动Anaconda Navigator后,我无法从那里启动jupyter笔记本。

如果我在命令提示符下运行“C:\ Anaconda3 \ Scripts> jupyter notebook”,Chrome浏览器会打开一个新的标签页“ http:// localhost:8888 / tree?token = 62d7eb16e2b7c5a9198ff6a84ec1056a00d60aeb99df55f0 ”,但内容是

Network Error (dns_unresolved_hostname) Your requested host "localhost" could not be resolved by DNS. For assistance, contact your network support team. 

C:\Windows\System32\drivers\etc\hosts文件的内容为:

 127.0.0.1 localhost 127.0.0.1 office.microsoft.com 

我该怎么办? 似乎这是一个networking或访问权限问题?

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