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General SSL Frequently Asked Questions
This error normally occurs when the root and intermediate certificates (available from our website) are not installed on the web server hosting the site.
Once these certificates are installed on the web server this issue should be resolved
Full installation instructions for the most common web servers can be found by following the link below:
This error only occurs when the certificate has expired or is not valid yet.
(This can also occur when the client system is set to the wrong time and date)
The certificate common name must match the site name EXACTLY or this error will occur.
To secure a site "www.domain.com" you will need a common name of www.domain.com
the only exception to this is the wild card certificate which can secure *.domain.com which secures all sub-domains of the domain.com
The easiest way to correct this if a mistake is made is to submit a new support ticket with a new CSR, with the corrected common name, along with your order number to support@comodo.com and we will regenerate the certificate for you.
This error occurs then there are "https://" and "http://" reference's to items within a web page this can be resolved but changing these to the correct reference for the type of page if this is on a secure page these will need to be "https://" and on a non secure page they will need to be referenced as "http://"
There are a few things that can cause this error, the most common ones are listed below:
1 : There is a firewall / router on your network not allowing traffic on the SSL port.
2: The private key for your certificate does not match or is not associated correctly with the certificate
3: The server itself is not configured to run SSL on the desired port, ie the port to listen on has not been entered
4: There is a DNS error on the network or an incorrect DNS mapping.
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