Re-confirm the domain information in the SSL certificate by checking the “Issued to” field in the Certificate details. The SSL certificate is either installed on the wrong site, or the domain name is not matching the site URL mentioned in the address bar. Clear SSL Common Name Mismatch Error:Īs specified earlier, domain name mismatch error in the SSL certificate is one of the reasons which may cause this error. Click all the options as shown in the below image and later click “Clear Data.”Ĭheck for error resolve after completing the process. Clear Cache and Data:īrowser Cache and Cookies may disrupt the smooth functioning of a website.Ĭlick Ctrl + Shift + Delete keys, and a new page will appear. Disable the same or remove it if unnecessary. Go to Chrome://extensions/, deactivate all extensions, and later activate one by one to find the extension creating the problem. If you don’t run across any errors while opening the Incognito icon, there may be a browser extension problem.
Browser extensions are small software that prevents the entrance of malicious sites and emails by filtering content and data.īut these browser extensions may sometimes cause problems with the SSL certificate security. Though web browsers play a small role in protecting your website data, they act as the first line of defense against cyber-attacks. Look for Problems in your Browser Extensions: Did you check if both these options are correct or not? If incorrect, rectify them, and resolve your error.
Something as small as an incorrect date and time on your PC or laptop can trigger this error. Minor issues can sometimes create significant problems. Now that there is some clarity about why this error is displayed, you need not panic because this error can be resolved with simple solutions.
This error also appears when the SSL certificate fails to display the domain name in any form, i.e., common name, wildcard SSL, or SAN (Subject Alternative Name). Net::Err_Cert_Common_Name_Invalid warning is displayed by the browser when a mismatch occurs between the common name mentioned in the SSL certificate and the one mentioned in the URL. There are multiple reasons which cause this error.Įxample: If your website name is for which you require an SSL certificate, your CSR (Certificate Signing Request) will display the site name as the common name. The “Common Name” mentioned in the above error cites the domain name required for certificate issuance. But this error may appear on genuine and known websites too. The red triangle shown in the image is a warning signal that the site you are trying to access is risky.
# Causes of ERR_CERT_COMMON_NAME_INVALID Error
Upgrade to the Latest Operating System & Chrome Browser: Set Your Proxy Settings to Detect Settings Automatically: Check if Your browser is Redirecting Visitors to Your Other Website Version: