The time and date of the computer are set incorrectly, which is out of sync with the Internet, resulting in the inconsistency between the validity period of the computer identification certificate and the date of the computer, and the risk information will be prompted.

Deploy: This question comes from the website owner. If the website owner does not put the correct computer on it, the certificate will be invalid.

The certificate is self-visa.

The certificate server failed, which was caused by the failure of the CA proxy server that issued the certificate.