How To Fix Err_Cert_Common_Name_Invalid Error

Solution 1: Check date and time are proper

Your Chrome browser will display ERR_CERT_COMMON_NAME_INVALID error in case the date and time are wrong on your computer or mobile device. Recheck and adjust it in your PC settings.

Solution 2: Check browser extensions

In some cases, the problematic browser extension could be a reason for the error. First of all, try to open the website in the Incognito window, and if that solves the issue then no need to check extensions. Otherwise, follow the next steps:

• Click the "three dots" button on the top right corner of your browser window

• Select More tools and Extensions

• Turn off extensions one by one to find culprit extension and delete it to fix the browser error.

Solution 4: Protection of both with/without WWW

All the single-domain SSL certificates we sell protect the WWW and non-WWW versions of your domain name. However, there are some certificates that do not protect them by default. In that case, you may have a problem using redirect from WWW to non-WWW or opposite option.

The possible solution is to install a suitable SSL certificate or remove any redirects and install Multi-Domain or Wildcard SSL or even single domain SSL to protect all the domains/subdomains in use.

Solution 6: Clear the SSL cache

The browser's SSL cache may be a problem. You should try to clear the cache to resolve the error.

For IE / Edge. You must open the Internet properties and look for the "Content" tab, there will be a button to "Clear SSL status".

For the Chrome browser, the process is similar, click the "Three Dots" button at the top right of the browser, look for "Settings". There you will find "Advanced Settings" at the bottom of a page. Now search for "Open proxy settings" and you will see the "Content" tab with "Clear SSL status"

Solution 7: Proxy settings

You may have limited browsing experience if automatic configuration detection is not set using proxy settings. The solution is to right-click on the network access icon to view Internet properties. Touch the "Connection" tab and then "LAN Settings".

You will see a new window where you will need to click to check the box next to "Automatically detect settings" if it is not already checked. Once this is done, you can try to open the website again to see if the error was fixed.

Solution 8: Update OS and Browser

The classic idea is to make sure that your operating system and browser are up to date, as old or outdated software can bring unexpected problems. The developers are working hard to create new patches and bug fixes, so having an updated system is essential.

Solution 9: Checking your Firewall/Antivirus

We suggest checking Firewall and Antivirus settings and LOG files to make sure they are not blocking the website you are trying to visit. Check the reason for the block carefully, if you found a block, as they are probably trying to protect you from a malicious website. We do not suggest disabling the antivirus.