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This article will explain in detail how to solve the problem that the browser shows "invalid SSL certificate". The editor thinks it is very practical, so I share it with you for reference. I hope you can get something after reading this article.

When you browse the web, the page says "SSL certificate is invalid". Have you ever encountered this situation? Why does this prompt appear on the web page? And what is the SSL certificate? In view of these problems, the editor makes a detailed introduction in the following content.

This only happens on the https website. HTTPS website is an encrypted website, when users visit the website, user data will be transmitted in an encrypted way. HTTPS website can well protect users' private information, so it is a safe and reliable website.

As long as the website server installs and deploys the SSL certificate, then the website can enable the HTTPS service, that is, users can visit your website through HTTPS. The prompt that the SSL certificate is invalid is due to a problem with the SSL certificate.

There are several situations where the SSL certificate is invalid:

1. SSL certificate has expired

The SSL certificate is valid, and only the certificate within the validity period will be considered by the browser to be secure for the HTTPS site. When you find that the browser says "SSL certificate is invalid", you can check whether your certificate has expired, and if it expires, then change your SSL certificate quickly.

To change the SSL certificate, you can find the original SSL certificate applicant or another SSL certificate authority to reapply for a new SSL certificate. Using the new SSL certificate will not have any impact on your HTTPS website.

2. SSL certificate is not trusted

If you confirm that the SSL certificate is still valid, it is likely that your SSL certificate is not issued by a trusted CA institution.

The browser will import the root certificates of some authoritative CA institutions into the trusted list in the computer system in advance. If your SSL certificate is not signed by the CA root certificate in the trusted list, then the browser will not think that the HTTPS site is secure.

Because there are trusted lists in computer browsers, when you apply for SSL certificates, you must select the certificates issued by CA institutions on these trusted lists, otherwise, even if your website has deployed SSL certificates, the browser will prompt "SSL certificates are invalid". (all the SSL certificates provided by this site are in the trusted list)

3. Your computer system time is incorrect

If you have checked that the SSL certificate has not expired, but the browser still shows that the certificate has expired, then you should check that your computer system time is wrong.

The browser determines whether the SSL certificate is valid or not, which is calculated according to the system time. If the system has the wrong time, it is naturally possible to calculate that the certificate is expired. Modify the system time, the HTTPS website should be able to visit normally.

4. The SSL certificate does not match the domain name of the website

One of the necessary verification steps for applying for a SSL certificate is to verify the domain name. The SSL certificate will not be issued until the domain name verification is passed. Therefore, the SSL certificate corresponds to the domain name of the website one by one, and the certificate of website A cannot be used for website B, otherwise the browser will also prompt "the SSL certificate is invalid".

What if the browser says "the SSL certificate is invalid"?

At this time, we should make some adjustments to the browser, but if there are some risky situations, we just need to re-invoke and configure it at this time. The editor reminds us that in order to avoid the occurrence of invalid ssl certificates, we should adjust the settings of the browser at this time, but if there are some risky situations, we just need to reinvoke and configure them at this time.

This is the end of the way to solve the problem that the browser shows "invalid SSL certificate". I hope the above content can be helpful to you and learn more knowledge. If you think the article is good, you can share it for more people to see.

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