Thank you all for your feedback.
@SadiqhAhmed-MSFT
My question is not about enabling replication.
@olufemia-MSFT
All extensions depend on the "Windows Azure Guest Agent". And from all I can find in the docs, the only way to get this agent installed is executing the MSI inside the VM. I am not aware of any method doing things inside the VMs guest OS from the Azure management when the "Windows Azure Guest Agent" is not installed. Or do I miss something?
I have put my solution in place, and it seams to be working fine so far.
But I would appriciate that ASR would handle the installation of the "Windows Azure Guest Agent" itself.
Best regards
Andreas