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Short error description:

Ms.Dynamics.Performance.CreateUsers.exe from PerfSDK throws error

There was no endpoint listening at https://mytest.sandbox.operations.dynamics.com/Services/AxUserManagement/Service.svc/ws2007FedHttp that could accept the message.

Long error description:

I have created a single user C# test from an XML recording and run it with PerfSDK successfully as described in the first part of the PerfSDK and multiuser testing with Visual Studio Online guide.

I am having trouble running multiuser load tests as described in the second part of the lab. The link above seems to be the only resource online describing how a multiuser test can be created from a singleuser test and how Visual Studio Online can be used to run it in a sandbox environment. I've also watched a few videos such as Tools to Measure and Improve Microsoft Dynamics AX Performance, Performance Tools and the like, but none of them explains all the steps that need to be taken in as much detail as the above article.

I've done the following:

1. Created a recording of a scenario with Task Recorder in Dynamics 365 for Operations.
2. Created C# perf test from recording in Visual Studio using the PerfSDKSample project from the PerfSDK folder.
3. Followed all 'Steps to run single user performance test with Perf SDK' from the article;
4. Built the solution and successfully ran my test from Test Explorer: Internet Explorer opened starting and replaying the scenario that I had recorded.

Note: I used DEV environment usnconeboxax1aos.cloud.onebox.dynamics.com for testing. When I tried using another hostname in CloudEnvironment.Config (a sandbox, e.g. mysandbox.sandbox.operations.dynamics.com), the singleuser test failed with the following error message:

System.TypeInitializationException: The type initializer for 'MS.Dynamics.TestTools.CloudCommonTestUtilities.Authentication.UserManagement' threw an exception. ---> System.ServiceModel.EndpointNotFoundException: There was no endpoint listening at https://mysandbox.sandbox.operations.dynamics.com/Services/AxUserManagement/Service.svc/ws2007FedHttp that could accept the message. This is often caused by an incorrect address or SOAP action. See InnerException, if present, for more details. ---> System.Net.WebException: The remote server returned an error: (404) Not Found..

1. For multiuser testing, I launched Visual Studio from Visual Studio Online portal https://app.vssps.visualstudio.com/profile/view
2. I modified the TestSetup method as follows:

Single-user TestSetup: