Error guide / ERR_CERT_DATE_INVALID

ERR_CERT_DATE_INVALID error

ERR_CERT_DATE_INVALID means the browser does not trust the site's SSL certificate because of its dates: it has already expired or is not valid yet. Because of that, the connection is treated as unsafe and the page will not open. Sometimes the real cause is a wrong date on the visitor's own device, not the website.

What causes it

Most often the site owner is to blame: the SSL certificate expired and auto-renewal did not run. Less often it is the visitor's side, when the date or time on their computer or phone is wrong.

How to fix it

1. Check the certificate's expiry with the SSL test below: it shows the end date and how many days are left.
2. If the certificate has expired, reissue it. On cPanel/LiteSpeed this is handled by AutoSSL from Let's Encrypt, usually every 90 days.
3. Make sure AutoSSL is enabled for every domain and subdomain on the account, including www.
4. If renewal keeps failing, remove any stale CAA DNS records or the old certificate that blocks a new one.
5. A visitor who sees this error should check the date and time on their device and turn on automatic sync.
6. After the certificate updates, clear the browser cache or open the site in a private window to see the fresh result.

Related errors

• ERR_CERT_AUTHORITY_INVALID ERR_CERT_AUTHORITY_INVALID error
• ERR_CERT_COMMON_NAME_INVALID ERR_CERT_COMMON_NAME_INVALID error
• ERR_SSL_PROTOCOL_ERROR ERR_SSL_PROTOCOL_ERROR error
• NET::ERR_CERT_REVOKED NET::ERR_CERT_REVOKED error