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System.InvalidOperationException: Metadata contains a reference that cannot be resolved: 'https://crm.derby-college.ac.uk/DerbyCollegeCRM/XRMServices/2011/Organization.svc?wsdl&sdkversion=7.1'. ---> System.Net.WebException: Unable to connect to the remote server ---> System.Net.Sockets.SocketException: No connection could be made because the target machine actively refused it 172.27.100.93:443 at System.Net.Sockets.Socket.DoConnect(EndPoint endPointSnapshot, SocketAddress socketAddress) at System.Net.ServicePoint.ConnectSocketInternal(Boolean connectFailure, Socket s4, Socket s6, Socket& socket, IPAddress& address, ConnectSocketState state, IAsyncResult asyncResult, Exception& exception) --- End of inner exception stack trace --- at System.Net.HttpWebRequest.GetResponse() at System.ServiceModel.Description.MetadataExchangeClient.MetadataLocationRetriever.DownloadMetadata(TimeoutHelper timeoutHelper) at System.ServiceModel.Description.MetadataExchangeClient.MetadataRetriever.Retrieve(TimeoutHelper timeoutHelper) --- End of inner exception stack trace --- at System.ServiceModel.Description.MetadataExchangeClient.MetadataRetriever.Retrieve(TimeoutHelper timeoutHelper) at System.ServiceModel.Description.MetadataExchangeClient.ResolveNext(ResolveCallState resolveCallState) at System.ServiceModel.Description.MetadataExchangeClient.GetMetadata(MetadataRetriever retriever) at Microsoft.Xrm.Sdk.Client.ServiceMetadataUtility.RetrieveServiceEndpointMetadata(Type contractType, Uri serviceUri, Boolean checkForSecondary) at Microsoft.Xrm.Sdk.Client.ServiceConfiguration`1..ctor(Uri serviceUri, Boolean checkForSecondary) at Microsoft.Xrm.Sdk.Client.OrganizationServiceConfiguration..ctor(Uri serviceUri, Boolean enableProxyTypes, Assembly assembly) at Microsoft.Xrm.Sdk.Client.ServiceConfigurationFactory.CreateConfiguration[TService](Uri serviceUri, Boolean enableProxyTypes, Assembly assembly) at Microsoft.Xrm.Client.Services.OrganizationService.CreateServiceConfiguration(CrmConnection connection) at Microsoft.Xrm.Client.Services.OrganizationService.GetServiceConfiguration(CrmConnection connection) at Microsoft.Xrm.Client.Services.OrganizationService.ToOrganizationServiceProxy(CrmConnection connection) at Microsoft.Xrm.Client.Services.OrganizationService.ToOrganizationService(CrmConnection connection) at System.Lazy`1.CreateValue() at System.Lazy`1.LazyInitValue() at Microsoft.Xrm.Client.Services.OrganizationService.InnerOrganizationService.UsingService[TResult](Func`2 action) at Microsoft.Xrm.Sdk.Client.OrganizationServiceContext.Execute(OrganizationRequest request) at Microsoft.Xrm.Sdk.Linq.QueryProvider.RetrieveEntityCollection(OrganizationRequest request, NavigationSource source) at Microsoft.Xrm.Sdk.Linq.QueryProvider.Execute(QueryExpression qe, Boolean throwIfSequenceIsEmpty, Boolean throwIfSequenceNotSingle, Projection projection, NavigationSource source, List`1 linkLookups, String& pagingCookie, Boolean& moreRecords) at Microsoft.Xrm.Sdk.Linq.QueryProvider.Execute[TElement](QueryExpression qe, Boolean throwIfSequenceIsEmpty, Boolean throwIfSequenceNotSingle, Projection projection, NavigationSource source, List`1 linkLookups) at Microsoft.Xrm.Sdk.Linq.QueryProvider.Execute[TElement](Expression expression) at Microsoft.Xrm.Sdk.Linq.QueryProvider.GetEnumerator[TElement](Expression expression) at System.Collections.Generic.List`1..ctor(IEnumerable`1 collection) at System.Linq.Enumerable.ToList[TSource](IEnumerable`1 source) at WebApplication2vs2015wforms.apply.rht.getCourseEvent(String courseCode) at WebApplication2vs2015wforms.apply.rht.Page_Load(Object sender, EventArgs e)