Orleans 7.2.1

[Da-Teach]

Although I suspect you found this out as well, this package is not compatible with Orleans 7.2.1. It'll crash during startup with a MissingMethodException: Method not found: 'System.Threading.Tasks.ValueTask Orleans.Runtime.GrainReference.InvokeAsync(Orleans.Serialization.Invocation.IInvokable)'.

[snovak7]

Yes, one way to get around the problem is to use explicit version Microsoft.Orleans.Core to 7.2.1

But if you're using this outside of Orleans you need to register one service first, to support named services.

[snovak7]

I found the registration code

.TryAddSingleton(typeof(IKeyedServiceCollection<,>), typeof(KeyedServiceCollection<,>));

Works with Microsoft.Orleans.Core package