Good Day

If we want to access ServiceDesk Plus via our intranet we get the "Connection to this site is not secure" warning. Therefore, we tried to install a self-signed SSL-certificate. Whilst importing the certificate ServiceDesk Plus throws an error. In the Support-File we found the error "Exception occurred when importing the SSL certificate! : Self signed certificate cannot be imported from UI|".

Is there any other way to import the certificate or to get rid of the warning?