SAP EM Web UI - Website’s security certificate

Dear All,

before accessing to the SAP EM Web UI using Internet Explorer 11 the system shows this warning:

"There is a problem with this website’s security certificate.

The security certificate presented by this website was not issued by a trusted certificate authority. Security certificate problems may indicate an attempt to fool you or intercept any data you send to the server. We recommend that you close this webpage and do not continue to this website."

Can you help me to remove this warning?

Best regards,

Pietro