Add certificate

In the certificate store toolbar, click the button.A dialog will open that lets you navigate to the desired certificate file and open it.Different file formats are supported (.der, .cer, .crt, .cert, .pem, .pfx, .p12).If you have a certificate with an unknown file extension, expand the file filter to "*.*" and try to open the file anyway. This works in most cases.

When the certificate is loaded, it appears in the certificate store list.

If you have not already done so, trust the certificate.