我正在尝试打开我的 Gmail 帐户。但我无法打开。我收到此错误：
This site can’t be reached
mail.google.com refused to connect.
Try:
Reloading the page
Checking the connection
Checking the proxy and the firewall
ERR_CONNECTION_REFUSED
Other services are working fine.
我观察到的一件事是，当我尝试在 IE 中打开 gmail 时，其默认语言是葡萄牙语（巴西）。当我尝试将其更改为英语时，我在 IE 中收到此错误：
The webpage cannot be found
HTTP 404
Most likely causes:
•There might be a typing error in the address.
•If you clicked on a link, it may be out of date.
What you can try:
Retype the address.
Go back to the previous page.
Go to and look for the information you want.
More information
我尝试过清除浏览器数据。Chrome 是最新的。那么问题可能出在哪里呢？请帮帮我。