Impossible de créer un canal sécurisé SSL/TLS

[lenoil]

Hi,

I try ..../proxy.ashx?https://SERVER/arcgis/rest/services/WMTS/orthophoto_2019/MapServer?request=GetCapabilities&service=WMTS&version=1.0.0 but I have this error :

What the problem ? {"error": {"code": 500,"message":"La demande a été abandonnée : Impossible de créer un canal sécurisé SSL/TLS. https://SERVER/arcgis/rest/services/WMTS/orthophoto_2019/MapServer?request=GetCapabilities&service=WMTS&version=1.0.0"}}

Thanks for your help