What should I do if the SSL certificate prompts that it is expired or invalid?

With the rapid development of the Internet today, people can easily access the Internet with just a smartphone, which has become an indispensable normal life for people.In order to improve network security and increase access protocol security, network providers will deploy SSL certificates on websites to improve website security and identification and prevent website data hijacking.

SSL certificate is a kind of digital certificate, which needs to be issued by a trusted CA, but there are not many institutions trusted by global browsers. In order to ensure compliance and security, the validity period of SSL certificates is fixed.

Why SSL certificates expire

The current maximum term of the SSL certificate is 13 months, and the normal issuance time is 1 year. The SSL certificate is not permanent and must be strictly protected, so the SSL certificate must update the private key and public key every year to upgrade the SSL certificateIn addition, the CA agency will verify the validity of the subject's identity every year, because the CA agency cannot ensure that the applicant is always in a legal state, and the current Internet era domain name transactions are also very complicated, which can easily lead to changes in domain name ownership or changes in business operations.Dynamic, so all CA institutions in the CA/B Forum Alliance voted to agree to the 1-year SSL certificate time. If the SSL certificate for more than 13 months cannot be used, he will be prompted by the browser as a dangerous SSL certificate, because the browser does not support more than 13 months.13 month SSL certificate.

Therefore, in order to ensure the validity and security of the website of the SSL certificate, the certificate management agency needs to ensure that the legitimate information and the latest information of the domain name and the main applicant are correct and valid. The SSL certificate has a validity period, and it needs to re-apply after the expiration.SSL certificate and reconfigure the SSL certificate, verify and verify the domain name or principal name.

What to do if the SSL certificate expires

About 15 days before the expiration of the SSL certificate is the best time to renew the SSL certificate. The SSL certificate must be renewed in advance to update the SSL certificate, because the website will stop visiting immediately after the SSL certificate expires, and an unsafe prompt will pop up "This website does notTrusted", which will reduce the trust of the website and user experience, and there is a risk of data leakage if the access is forced.