Request protocol 'HTTP/1.1' is not supported

Hello Community!

I have successfully installed EventStore database on Windows Server 2012 - and it works fine. But I try to connect to it using the GRPC client and I get the error “Request protocol ‘HTTP / 1.1’ is not supported.” Can I change something in the configuration or EventStore requires connection via HTTP/2 by design (which is not supported on Windows Server 2012) ?

Thank you for any feedback.