It is possible that Kaspersky is intercepting the connection and is sending its own certificate.

Open this chrome URI by pasting or typing this URI in the location/address bar to open the "Add Security Exception" window and check the certificate:

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

In the location field type/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 the certificate chain in Details tab of the Certificate Viewer.

Dear cor-el,

Thanks for a prompt reply, here's what I've got (see the screengrab). Any ideas how to proceed from here? (When I confirm the exception, nothing changes in the behavior of the browser. Take care,

M.

As you can see the certificate is issued by Kaspersky Anti_Virus Personal Root Certificate.

You can import the Kaspersky root certificate in the Certificate Manager under the Authorities tab.

• Tools > Options > Advanced > Certificates: View Certificates

You can find the Kaspersky Anti-Virus Personal Root Certificate in this folder:

• "C:\ProgramData\Kaspersky Lab\AVP15.0.1\Data\Cert\"

Set the "Trust this CA to identify websites" trust bit to make the imported certificate work as trusted root certificate.

• [/questions/1020310] Problem with "connection untrusted"

Dear cor-el,

Thank you very much for your help. I finally located the Cert folder, it was hidden, of course, but with the help of this thread here https://support.mozilla.org/en-US/questions/1020310, I was able to unhide it and find exactly what I needed. The PayPal site loads perfectly now, thanks again! All the best, have a good night (if it's night what you have now),

M.

You're welcome.