problem native windows remote desktop

hey

i already to configure portail ressource and webtop , i add remote desktop type session host.

after i create certificate in windows server via iis , and i configure this certificate in ssl profile client and server.

for test when click file.rdp show me page connxion after to click connect ,display me message error

"This computer can't verify the identity of the RD Gateway "apm.example.com"

please can you to help me for fix this problem