A secure connection could not be established

[ymcymc]

ngit2, clone command, win10, .net4.5 vs2017 pro

WebException: The request was aborted: Could not create SSL/TLS secure channel

at Sharpen.HttpURLConnection.get_Response()
at Sharpen.HttpURLConnection.GetResponseCode()
at NGit.Util.HttpSupport.Response(HttpURLConnection c)
at NGit.Transport.TransportHttp.Connect(String service)
at NGit.Transport.TransportHttp.OpenFetch()
at NGit.Transport.FetchProcess.ExecuteImp(ProgressMonitor monitor, FetchResult result)
at NGit.Transport.FetchProcess.Execute(ProgressMonitor monitor, FetchResult result)
at NGit.Transport.Transport.Fetch(ProgressMonitor monitor, ICollection`1 toFetch)
at NGit.Api.FetchCommand.Call()
at NGit.Api.CloneCommand.Fetch(Repository clonedRepo, URIish u)
at NGit.Api.CloneCommand.Call()
at WebApplication1.WebForm1.kk() in C:\Users\myu\source\repos\WebApplication1\WebApplication1\WebForm1.aspx.cs:line 25
at WebApplication1.WebForm1.Page_Load(Object sender, EventArgs e) in C:\Users\myu\source\repos\WebApplication1\WebApplication1\WebForm1.aspx.cs:line 16
at System.Web.Util.CalliEventHandlerDelegateProxy.Callback(Object sender, EventArgs e)
at System.Web.UI.Control.OnLoad(EventArgs e)
at System.Web.UI.Control.LoadRecursive()
at System.Web.UI.Page.ProcessRequestMain(Boolean includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint)