升级到win10后，firefox cannot find the server。

自从upgrade到win10后，firefox就不工作了，用win10 自带浏览器上网没问题，WIFI也没问题。使用firefox 任何网都上不去。 请各位大大帮帮忙解决这个难题。停了firewall 也没用。Pls see info shown in the web page.

Server not found

Firefox can't find the server at www.google.com.

Check the address for typing errors such as ww.example.com instead of www.example.com
If you are unable to load any pages, check your computer's network connection.
If your computer or network is protected by a firewall or proxy, make sure that Firefox is permitted to access the Web.