Is this a problem with the issuer of the certificate or another problem?

What does it say if you click the Advanced button to expand the error message?

You can retrieve the certificate and check details like the issuer of the certificate and the certificate chain.

• click "Advanced" to expand the error message
• click "Add Exception" to open "Add Security Exception"

If this isn't possible then open "Add Security Exception" by pasting this URL in the location/address bar and paste the URL of the website (https://xxx.xxx) in it's location field.

• chrome://pippki/content/exceptionDialog.xul

Let Firefox retrieve the certificate -> "Get Certificate"

• click the "View" button and inspect the certificate

You can see details like the issuer of the certificate and used intermediate certificates in the Details tab.

Who is the issuer of the certificate?

in continuation to previous question, I'm uploading the attachment.

What certificate information do you see if you inspect the certificate like I posted above via the chrome URL?

• chrome://pippki/content/exceptionDialog.xul
• https://retail.onlinesbi.com/personal/

Sir, sorry for the late reply, was busy with my exams. Here are the attachments

The retail.onlinesbi.com server is far behind on security and only supports weak cipher suites.

• https://www.ssllabs.com/ssltest/analyze.html?d=retail.onlinesbi.com

I need to enable security.ssl3.dhe_rsa_aes_128_sha on the about:config page to make it work with current Firefox releases. This cipher suite has been disabled because of the logjam security vulnerability.

• http://arstechnica.com/security/2015/05/https-crippling-attack-threatens-tens-of-thousands-of-web-and-mail-servers/