HTTPS error while creating Consumer Proxy

Hi Experts. I'm trying to create a webservice consumer proxy based on a URL (https://www2.ventanillaunica.gob.mx/ventanilla-nrc/RecibirCoveService?wsdl). Howerver when I try to create the proxy, the system returns the error message: HTTP:500 Native SSL Error https://www2.ventanillaunica.gob.mx/ventanilla-nrc/RecibirCoveService?wsdl

I can access the wsdl on IE. I've created other proxys based on http URLs with no errors at all.

Any suggestions?