If you’ve determined that the ERR_CERT_DATE_INVALID is caused by an issue on your computer, try these steps to resolve it: Troubleshooting issues with your computer You can find step-by-step instructions for common website platforms in our SSL knowledgebase. Install the updated SSL certificate on your website.Complete the validation process (commonly completed via email or by uploading a verification file to your website).If your site is an ecommerce or financial site, you’ll want an EV certificate to enable the green address bar.If your website has different subdomains (eg, etc.) you’ll want a wildcard SSL certificate.If you just need basic HTTPS security, a basic DV certificate is likely all you need.Here are a few quick tips on which to choose: Good news, you can quickly and easily fix this issue to get your website easily accessible. If you DO manage the website in question: The URL on their site that you’re trying to visit.A screenshot of the NET::ERR_CERT_DATE_INVALID message you’re seeing.You’ll need to contact the website owners. If you DON’T manage the website in question: If the expanded security warning shows that the website’s SSL certificate has expired, you’ll need to install an updated SSL certificate on the website. Look at the “Fixing an expired SSL certificate” section of this article. If the expires on date is today or earlier, that means the website has an invalid SSL certificate. Is that the current date? If not, skip down to the “Troubleshooting issues with your computer” section of this article. These two dates will tell you where the problem is that’s triggering the NET::ERR_CERT_DATE_INVALID warning on Google Chrome: On the error page you’re seeing in Google Chrome, click on the “NET::ERR_CERT_DATE_INVALID” text to expand the warning, like this: Here’s what you should do to diagnose and fix this SSL error: Start Here: Determine whether the issue is with the website or your computer The error means that the internet connection or the device itself is preventing Google Chrome from loading the page correctly, Chrome thinks the page is insecure and poses you a threat. No, you shouldn’t ignore this warning or click to proceed. If you’re seeing this error, it means that there’s a difference between your computer’s time and the validity of the website’s SSL certificate: The NET::ERR_CERT_DATE_INVALID error in the Google Chrome browser is a form of the “Your Connection is not private” error. There are several potential fixes for sites encountering an ERR_CERT_DATE_INVALID error in Chrome

Google invalid security certificate