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How to Fix the NET:ERR_CERT_COMMON_NAME_INVALID SSL Error on Your Site

neterrcertcommonnameinvalid

If you’re getting the NET:ERR_CERT_COMMON_NAME_INVALID error on your site, you may not have the correct SSL certificate installed on your server. The reason for this error is usually the mismatch between the name of the certificate and the domain. This can be caused by server misconfiguration or browser extensions. In this case, you should check the domain’s certificate and install it properly. If the certificate issuer has listed the SANs, the ERR_CERT_COMMON_NAME_INVALID error can be resolved.

The NET:ERR_CERT_COMMON_NAME_INVALID error occurs when the certificate and domain name do not match. If the common name is correct, then the website is secure. If the certificate is not valid, the website cannot be opened. You can resolve the problem by updating the certificate or changing the settings of the antivirus or browser extension. This error will be gone after a few days.

If the problem persists, you can try to update your browser. If it doesn’t, you should try clearing the cache and cookies. You can also try to update your antivirus and third-party extensions. In either case, the fix will require some additional steps. First, identify the extension that’s causing the mismatch. To identify the culprit, turn on the extensions one by one. Once you’ve done this, visit the problematic website to see if the issue has gone away.

If you’re receiving the NET:ERR_CERT_COMMON_NAME_INVALID error on your site, it means that the SSL certificate you’re using does not match your website’s common name. Typically, the common name is the domain name. However, this doesn’t mean that the common name is unrelated. For example, if you’re seeing a non-WWW.COM URL, it means that the common name on your site does not match the domain name.