Serial console for Azure Virtual Machines is an invaluable self-serve troubleshooting tool that can be used to interact with VMs or virtual machine scale set instances when network connectivity is otherwise unavailable.
Serial console is now available in preview in the Azure US Government Cloud, allowing customers in the government-only clouds to access the serial console of their VMs or virtual machine scale set instances. All serial console features are available in this preview—SysRq, NMI, reboot, and reset.