The Azure workload should not be required when running applications featuring Telerik UI for ASP.NET Core components. May I ask you to specify which demo application results in the above requirement?
As per the error, you have initially opened the current thread for, that would be present when using an older version of Telerik UI for ASP.NET Core within a .Net Core 3.0 application. In order to avoid that you should make sure that the version of the Telerik package is the latest (2019.3.1023).
I have also reviewed the support thread that you have opened on the same. Here is what I believe went wrong with the Telerik version. I noticed that your initial project references version 2018.3.911 of Telerik.UI.for.AspNet.Core.Trial package. That is the only version of the above package available on the public NuGet.org feed. I believe that you have included a reference from that source, instead of the latest trial available on the Telerik private NuGet feed. Here you will find some more info on how to set up the Telerik NuGet:
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