If you're seeing the NET::ERR_CERT_DATE_INVALID error message when trying to visit a website in your browser, it means that the SSL certificate for that site has expired or has an incorrect date. This can happen for a number of reasons, but fortunately, there are a few methods you can use to fix the issue.
The first thing you should do is make sure that your computer's date and time are set correctly. An incorrect system date can cause SSL certificate errors, so double-check that your time zone and time are accurate.
Clearing your browser cache and cookies can also fix SSL certificate errors, as it forces your browser to download a fresh copy of the site's SSL certificate. To do this, go to your browser's settings or options and look for the option to clear your cache and cookies. Once you've done this, try accessing the site again.
Sometimes browser extensions can interfere with SSL certificates, causing errors like NET::ERR_CERT_DATE_INVALID. To see if this is the case, try disabling all your browser extensions and accessing the site again. If the error goes away, you'll need to narrow down which extension is causing the problem and either disable it permanently or update it.
If none of the above methods work, you should check the website's SSL certificate. You can do this by clicking on the padlock icon next to the website's URL in your browser's address bar. This will show you information about the SSL certificate, including its expiration date. If the certificate has expired, you'll need to contact the website owner and ask them to renew it.
Finally, some antivirus software can interfere with SSL certificates and cause errors like NET::ERR_CERT_DATE_INVALID. If you suspect this is the case, try adjusting your antivirus software's settings to see if that fixes the problem. If you're not sure how to do this, contact your antivirus software provider for assistance.In conclusion, the NET::ERR_CERT_DATE_INVALID error can be caused by a variety of issues, but these methods should help you diagnose and fix the problem. If you're still having trouble after trying these methods, contact the website owner or your IT department for further assistance.