What does it mean that the revocation information for the site's security certificate is unavailable?

When the revocation information of the website security certificate is not available, it means that the browser cannot verify the validity of the certificate. The reasons may be: 1. The certificate revocation list is inaccessible; 2. The certificate authority has revoked the certificate; 3. Server configuration error; 4. Browser cache. Impact: The data transfer is not secure and the browser may display a warning message. Workaround: Refresh your browser, clear your cache, contact the site administrator, use a different browser, or secure connection.

What does it mean that the revocation information of the site's security certificate is not available?

When you see that the security certificate revocation information is not available when visiting a website, the reasons may be the following:

1. The Certificate Revocation List (CRL) is not accessible :

• The revocation list is a database that stores revoked certificate information.
• If a website cannot access the CRL, it will not be able to verify that the certificate is valid.

2. The certificate authority (CA) has revoked the certificate:

• The reasons why the CA may revoke the certificate include that the certificate has been stolen, used for malicious purposes or with incorrect information.
• Because the website cannot obtain revocation information from the CA, it cannot verify that the certificate has been revoked.

3. Server configuration error:

• The website server may configure certificate revocation checking to be unavailable.
• This situation is usually temporary and can be resolved by updating the server configuration.

4. Browser cache:

• Some browsers cache certificate revocation information even if the website's certificate has been revoked.
• This may cause the browser to display a revoked certificate that is still valid.

Impact:

When revocation information for a security certificate is unavailable, the browser may not be able to verify the validity of the certificate, which may result in:

• Warning message displays
• The website cannot be loaded securely
• The data transfer is not secure

Solution:

To resolve this issue, you can try the following steps:

• Refresh your browser
• Clear your browser’s cache and cookies
• Contact the website administrator to request Update certificate
• Use a different browser to access the website
• Use a secure connection (HTTPS)

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