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DVLS server is not responding

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I'm trying to add an RDM connection profile with domain authentication and the test connection fails with error:
DVLS server is not responding.
Unexpected exception

Here is the error report:

The following error was received by at 4/19/2018 11:17:18 AM
Error:
NullReferenceException - Object reference not set to an instance of an object. at Devolutions.Server.Controllers.APIControllers.V2.BackendApiController.PrepareFailedLoginResult(Guid userId, PrepareResultModel model, Boolean partialMode) at Devolutions.Server.Controllers.APIControllers.V2.BackendApiController.DoLogin(SessionContext context, String userName, String password, ClientApplicationInfo clientApplicationInfo, String twoFactorID, TwoFactorInfo twoFactorInfo, String publicIPAddress, Byte[] sessionKey, String repositoryId, Boolean partialMode, Boolean useWindowsAuthentication, String localMachineName, String localMachineUserName) at Devolutions.Server.Controllers.APIControllers.V2.BackendApiController.Login(LoginData loginData, Boolean partialMode) at lambda_method(Closure , Object , Object[] ) at System.Web.Http.Controllers.ReflectedHttpActionDescriptor.ActionExecutor.<>c__DisplayClass10.b__9(Object instance, Object[] methodParameters) at System.Web.Http.Controllers.ReflectedHttpActionDescriptor.ExecuteAsync(HttpControllerContext controllerContext, IDictionary`2 arguments, CancellationToken cancellationToken) --- End of stack trace from previous location where exception was thrown --- at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw() at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task) at System.Web.Http.Controllers.ApiControllerActionInvoker.d__0.MoveNext() --- End of stack trace from previous location where exception was thrown --- at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw() at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task) at System.Web.Http.Filters.ActionFilterAttribute.d__5.MoveNext() --- End of stack trace from previous location where exception was thrown --- at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw() at System.Web.Http.Filters.ActionFilterAttribute.d__5.MoveNext() --- End of stack trace from previous location where exception was thrown --- at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw() at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task) at System.Web.Http.Filters.ActionFilterAttribute.d__0.MoveNext() --- End of stack trace from previous location where exception was thrown --- at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw() at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task) at System.Web.Http.Controllers.ActionFilterResult.d__2.MoveNext() --- End of stack trace from previous location where exception was thrown --- at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw() at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task) at System.Web.Http.Controllers.ExceptionFilterResult.d__0.MoveNext() --- Default
Source:
Devolutions.Server

Please advise

Clock2 yrs

Hello,

What version of Devolutions Server are you using?

What version of RDM are you using?

Best regards,



Érica Poirier

signaturesignature

Clock2 yrs

server version 5.0.2.0
RDM version 13.5.6.0 64-bit

Clock2 yrs

Hello,

Could you please send us the DVLS Diagnostic report?
https://helpserver.devolutions.net/kb_senddiagnostic.htm

Best regards,



Érica Poirier

signaturesignature

Clock2 yrs

done

Clock2 yrs

Hello,

Thank you for the diagnostic report.

Does the account set in the Administration credentials field of the Domain tab has full read permission on your AD structure?
This account can be a domain administrator account or a service account that has full read permission on the entire AD structure.


image

Best regards,



Érica Poirier

signaturesignature

Clock2 yrs

yes and it shows connection successful when I click the validate button in the administration credentials. I have tried both regular user and domain admin.

Clock2 yrs

Hello,

Have you tried the web interface if you are able to connect? If it still doesn't work, do you get the same error message in the DVLS logs?

Which username format are you using to connect with RDM?

Best regards,



Érica Poirier

signaturesignature

Clock2 yrs

It turns out that I was able to recreate the user account with auth type domain and it's working now. The error message "DVLS server is not responding" was misleading. Thanks for your help!

Clock2 yrs