1. The computer system time is incorrect: adjust the computer system time to the validity period of the https security certificate.

2. The https security certificate expires: the website owner needs to update the certificate at the HTTPS security certificate authority CA.

3. The https certificate of the off-grid website of the current site is expired: the website owner needs to cancel the off-grid website or the owner of the off-grid website needs to go to CA to replace or update the certificate.

In addition, in addition to the above situations, the browser will also give a risk warning to https websites with the following situations.

1. Use a self-signed https certificate.

Some websites use self-signed https certificates to encrypt their websites. In fact, the self-signed https certificate is not only not trusted by the browser, but also has great security risks.

2. Use an https certificate with poor universality.

Using https certificates with poor universality will lead to distrust of some browsers. For example, the https certificate issued by CA organization is not trusted by Google and Firefox browsers. When you use Google or Firefox to visit a website with this https certificate, you will be reminded of the risks.

The https security certificate issued by Jing 'an is trusted by all browsers and mobile phone operating systems, and provides 7×24 hours of customer service and technical support. Compared with other https certificates, it is more secure, credible and cost-effective.

3. The 3.https certificate is not deployed correctly.

If the https certificate of the website is not deployed correctly, it will also be prompted by the browser when visiting the website. For example, there are calls to http resources in https pages, and some versions of browsers will prompt that the pages are unsafe. At this time, you only need to change these http call resources into https calls.

For more information about the https security certificate solution, please refer to: Web Link.