Did you try this in ESET:

Path: Advanced Setup -- Web and Email --- SSL/TLS
Root certificate then uncheck "Add the root certificate to know browsers"
SSL protocol: Do not scan SSL protocol

If you can't inspect the certificate via "I Understand the Risks" then try this:

Open the "Add Security Exception" window by pasting this chrome URL in the Firefox location/address bar and check the certificate:

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

In the location field of this window type or paste the URL of the website.

• retrieve the certificate via the "Get certificate" button
• click the "View..." button to inspect the certificate in the Certificate Viewer

You can inspect details like the issuer and the certificate chain in the Details tab of the Certificate Viewer. Check who is the issuer of the certificate. If necessary then you can attach a screenshot that shows the certificate viewer.

In order to filter your secure connections, ESET software presents Firefox with fake certificates signed by itself. Usually ESET sets up Firefox to trust its signing certificate, but a Refresh removes Firefox's certificate store file and you are starting from scratch. I don't know whether ESET will automatically take care of this problem at your next Windows startup, or whether you'll need to take manual steps. Some users may choose to copy the old certificate store file (cert8.db) from the Old Firefox Data folder on the desktop into their new profile folder, but that can carry a lot of baggage, so I would consider it to be a last resort unless you absolutely have to do it to be productive.

When into ESET advance setup as suggested unchecked the "Add the root certificate to know browsers" then restarted my laptop, promblem still persisted. When back into ESET advanced setup and checked the "Add the root certificate to know browsers", problem solved, don't know why. Thanks for all tour help.