Hi We have problem sending requests to VBS in VB 15. The requests come back with the error message before they reach VBS or Debug Host. Same programs work normally with earlier versions of Visma. We presume that something must be changed in the config but didn't manage to find what. Do you have any suggestions? The error message:   Severity: Error - Failed to communicate with Visma Business Services. Failed to communicate with server. The caller was not authenticated by the service. The request for security token could not be satisfied because authentication failed. at System.ServiceModel.Security.SecurityUtils.ThrowIfNegotiationFault(Message message, EndpointAddress target) at System.ServiceModel.Security.SspiNegotiationTokenProvider.GetNextOutgoingMessageBody(Message incomingMessage, SspiNegotiationTokenProviderState sspiState) The config file:   <system.serviceModel> <bindings> <basicHttpBinding> <binding name="BasicHttpBinding_IOrderService" closeTimeout="00:01:00" openTimeout="00:01:00" receiveTimeout="00:10:00" sendTimeout="00:01:00" allowCookies="false" bypassProxyOnLocal="false" hostNameComparisonMode="StrongWildcard" maxBufferSize="65536" maxBufferPoolSize="524288" maxReceivedMessageSize="65536" messageEncoding="Text" textEncoding="utf-8" transferMode="Buffered" useDefaultWebProxy="true"> <readerQuotas maxDepth="32" maxStringContentLength="8192" maxArrayLength="16384" maxBytesPerRead="4096" maxNameTableCharCount="16384"/> <security mode="None"> <transport clientCredentialType="None" proxyCredentialType="None" realm=""/> <message clientCredentialType="UserName" algorithmSuite="Default"/> </security> </binding> </basicHttpBinding> <wsHttpBinding> <binding name="vbsSecuredBinding" closeTimeout="23:59:59" openTimeout="23:59:59" receiveTimeout="23:59:59" sendTimeout="23:59:59" maxBufferPoolSize="524288" maxReceivedMessageSize="1073741824"> <readerQuotas maxDepth="1000000000" maxStringContentLength="1000000000" maxArrayLength="1000000000" maxBytesPerRead="1000000000" maxNameTableCharCount="1000000000"/> <security mode="Message"> <message clientCredentialType="UserName"/> </security> </binding> </wsHttpBinding> </bindings> <client> <endpoint address="http://localhost:2001/GenericService" behaviorConfiguration="nullX509Behavior" binding="wsHttpBinding" bindingConfiguration="vbsSecuredBinding" contract="Visma.BusinessServices.Generic.IGenericService"> <identity> <dns value="VBSTestCert"/> </identity> </endpoint> <endpoint address="http://localhost:2001/TestService" binding="basicHttpBinding" bindingConfiguration="BasicHttpBinding_IOrderService" contract="OrderServiceRef.IOrderService" name="BasicHttpBinding_IOrderService"/> </client> <behaviors> <endpointBehaviors> <behavior name="nullX509Behavior"> <clientCredentials> <serviceCertificate> <authentication certificateValidationMode="Custom" customCertificateValidatorType="Visma.BusinessServices.Client.NullX509CertificateValidator, Visma.BusinessServices.Client"/> </serviceCertificate> </clientCredentials> <dataContractSerializer maxItemsInObjectGraph="1000000000"/> </behavior> </endpointBehaviors> </behaviors> </system.serviceModel>     ... Visa mer