当您访问使用HTTPS的网站时，它还会向浏览器提供 SSL证书以验证其身份。虽然它里面确实有很多东西，但它包含的一件事是网站的URL。如果证书与用户输入的URL^(URL)不匹配，则会导致警告 –服务器的证书不匹配，^{(Server’s certificate does not match,)} ERR CERT COMMON NAME INVALID，并且连接不是私有的，并且该站点可能会尝试窃取您的数据。在这篇文章中，我们将分享如何解决这个问题。

ERR_CERT_COMMON_NAME_INVALID

1]检查证书

如果您是收到该错误的网站所有者，则需要检查证书是否已正确安装并在服务器上配置。

2]检查您的主机文件

Windows 使用一个HOST 文件^{(HOST file)}，当它想要将网站解析为 IP 地址时首先检查该文件。如果有任何机会，该主机文件已被恶意软件修改，它将重定向到一个看起来像原始网站但 IP 地址不同且没有正确SSL证书的恶意网站。确保^(Make)删除该文件中的任何网站实例并保存。

3]使用谷歌公共DNS

• 首先^(First)，右键单击任务栏网络^(Network)图标并选择网络^(Network)和共享中心^{(Sharing Center)}。
• 选择“更改适配器设置”。
• 搜索用于连接互联网的网络连接，选项可能是“本地连接”或“无线连接”。
• 右键单击它，然后单击属性。
• 选择新窗口以选择“ Internet 协议 4^{(Internet Protocol 4)} ( TCP/IPv4 )”，然后单击“属性^(Properties)”按钮。
• ^(Click)在新窗口中单击“使用^(Use)以下DNS服务器地址”复选框。^(DNS)
• 进入 8.8.8.8 和 8.8.4.4
• 最后，单击确定并退出。

这些提示之一应该可以帮助您解决此错误。它可以在任何浏览器中发生，例如Chrome等，但主要是 PC 级别或服务器级别的问题。

Fix ERR_CERT_COMMON_NAME_INVALID error

When you vіsit a website which υses HTTPS, it alsо offers an SSL certificate to the browser to verify its identity. While it does have a lot of things inside it, one thing it includеs is the URL of the website. In case the certіficate does not match the URL to what user has entered, it will result in a warning – Server’s certificate does not match, ERR CERT COMMON NAME INVALID, and that the connection is not private, and the site may try to steal your data. In this post, we will share how to fix this issue.

ERR_CERT_COMMON_NAME_INVALID

1] Check the Certificate

If you are the website owner receiving that error, you need to check if the certificate is properly installed, and configured on the server.

2] Check your Host File

Windows uses a HOST file which is first checked when it wants to resolve the website to IP address. If by any chance, this host file has been modified by a malware, it will redirect to a malicious website which will look like the original website but on a different IP address, and without a proper SSL certificate. Make sure to remove any instance of the website in that file and save it.

3] Use Google Public DNS

• First of all, right-click on the taskbar Network icon and select Network and Sharing Center.
• Select “Change Adapter Settings”.
• Search for the network connection that is used to connect to the internet, the option might be either “Local Area Connection” or “Wireless Connection”.
• Right-click on it and click Properties.
• Choose the new window to select “Internet Protocol 4 (TCP/IPv4)” and then click the Properties button.
• Click the checkbox for “Use the following DNS server addresses” in the new window.
• Enter in 8.8.8.8 and 8.8.4.4
• Finally, click OK and exit.

One of these tips should help you to fix this error. It can happen in any browser like Chrome, etc, but is mostly a PC-level or a Server-level problem.

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