Unable to Lubally Verify the Issuer's is an error that usually arrises when you are using SSL certificates. It occurs when a web server is unable to validate an SSL Certificate. This error can be due to various reasons.
Here is a step-by-step guide to resolving this issue.
Step 1: Determine the Root Cause of the Error
The most common reasons for this error are misconfiguration of the server, or corrupted files, or an expired SSL certificate. It is important to first try to determine the cause of the error before taking any further steps.
To investigate the root cause, it is best to use a debugging tool such as Wireshark to capture the SSL packets. By analysing these packets, you should be able to determine the root issue.
Step 2: Check Configuration Settings
Once the root of the issue is determined, you can then start to assess the configuration settings. Reviewing the configuration settings can help you detect any misconfigurations that might have caused the error.
You should also review any new changes that have been made to the server’s configuration settings that could be causing this error.
Step 3: Check the SSL Certificate
The next step should be to check the SSL certificate to make sure that it has not expired or been revoked. You can check the status of a certificate using the following command:
openssl s_client -showcerts -servername domainname.com
You should also check to ensure that the SSL certificate has been correctly installed and configured on the web server.
Step 4: Check DNS Settings
Finally, check the DNS settings for the domain to make sure it is correctly configured. In particular, ensure that the DNS A record and the SANs record are both pointing to the correct IP address.
Once all these steps have been completed, you should be able to fix the error.
FAQs
What does the error 'Unable to Locally Verify the Issuer's' mean?
This error occurs when a web server is unable to validate an SSL Certificate. This can be due to misconfigurations, corrupt files or an expired SSL certificate.
How do I fix this error?
The best way to fix this error is to start by determining the root cause of the error using a debugging tool such as Wireshark. Once you know the root cause, then you can start to review the configuration settings and check the SSL certificate to make sure it has not expired or been revoked. Finally, check the DNS settings for the domain to make sure that it is correctly configured.
How do I check the status of an SSL Certificate?
You can check the status of an SSL Certificate using the following command:
openssl s_client -showcerts -servername domainname.com
What are SANs records?
SANs records, also known as Subject Alternative Names, are used to provide additional host names for a single SSL certificate. This is important for when a website has multiple domains and subdomains that need to be covered by the same certificate.
How do I check if the SSL Certificate has been properly installed?
To check if the SSL Certificate has been properly installed, look at the web server’s configuration settings. Make sure that the correct certificate has been set and that all of the correct settings have been configured. Also look at the SSL Certificate itself to make sure that it has been properly installed.