We connect to the internet through our web browsers. The interconnection they offer us may expose us to online threats and malware. A good way to stay safe is by communicating with security certificates between our browsers and servers or web resources. However, when credentials are mandated, we may receive error messages if something is out of sync. This net::err_cert_common_name_invalid certificate error is one a few users have faced. So let’s show you how to fix it.

What is NET :: ERR_CERT_COMMON_NAME_INVALID?

As you must have guessed, this error is related to certificate issues. It simply means that your certificate’s common name is invalidated. In such cases, your domain name and certificate name are a mismatch. Other problems may also arise from various extensions installed on your browser too. This common SSL error on many platforms can also be due to a server misconfiguration of your website, a Chrome bug, firewall issues, or third-party extensions. Also, while each Chrome update resolves known bugs in the browser, it can also introduce new issues if things don’t go as they should and could be a cause of the error. Users may have the issue displaying any of the following messages:

err_cert_common_name_invalid net::err_cert_common_name_invalid err_cert_common_name_invalid in Chrome Edge chromium err_cert_common_name_invalid net::err_cert_common_name_invalid HBO err_cert_common_name_invalid in Windows 10

Quick Tip:

Instead of troubleshooting Chrome, you can get back online fast using another browser. Opera is a great alternative because it’s built on Chromium and supports all Chrome extensions. However, Opera is far more lightweight and includes modern features like an adblocker, an inbuilt VPN, and social media integrations.

How do I fix NET :: ERR_CERT_COMMON_NAME_INVALID?

1. Disable your antivirus or firewall

Antivirus programs and firewall applications are also the culprits for your browser’s errors. This results in SSL issues that will limit your browsing. You may disable security applications in the interim and check if it solves the issue. Additionally, you could try using an antivirus tool that is both reliable and has minimum system interferences. Antiviruses that are compatible with Windows 10 and 11 PCs are generally well built, with frequent updates that allow them to keep your system protected without causing any interference with other apps. There are lightweight options silently in the background, stopping all forms of malware before it can even enter your PC. Make sure to get a utility that has a fast response rate and can run regular scans while you take care of other tasks. SPONSORED Thankfully, many antiviruses implement more than just one type of shield, being able to prevent and remove all sorts of threats.

2. Reinstall Chrome

This should resolve possible issues and get you in the clear. But, of course, don’t forget to backup your bookmarks and passwords. You can do it manually or use a third-party cleaner utility. One such tool is CCleaner. It will remove any browser trace, allowing you to reinstall it as if it was never there. ⇒ Get CCleaner

3. Identify problematic extensions

To determine that an extension is causing the trouble, you may browse in incognito mode first and see if everything is fine. If you don’t see the error message in incognito mode, then an extension might be the culprit. To identify the problematic extension, disable all the plugins in your Chrome browser, following the steps we outlined. Then enable one extension at a time and visit any site to see if the error message still appears. Repeat this step for the rest of the extensions until you find the culprit.

4. Check proxy settings

Now check if the error is gone after correcting your proxy settings. Proxy settings can also affect how your browser works. For example, a small error in the configuration is enough to cause problems with browsing, so be sure to check your proxy settings.

5. Clear cache and data

6. Clean your SSL cache

7. Update your Chrome

How do I check my SSL certificate?

Why is my SSL certificate not secure? There are a few reasons why your SSL certificate may not be secure, but in most cases, it is because it has expired. In some cases, it could also be because the installation is not correctly done or completed on the server. How do I install an SSL certificate? If you have read to this point, we believe you must have fixed the net::err_cert_common_name_invalid error. As a general rule, we recommend that you regularly update your browser; it is a great way to keep many browser-level errors away. Some of the solutions will also work if you have a no proceed option certificate error on Chrome. If you know of any other method to fix the ERR_CERT_COMMON_NAME_INVALID issue in Chrome, share them with us in the comment section below!

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