Hi All
I have created a Virtual Network named hub 10.0.0.0/16
subnet named sn110.0.0.0/24
GatewaySubnet 10.0.1.0/24
virtual machines
VM1 - 10.0.0.4
VM2 - 10.0.0.5
I have configured SSTP Point to Site with Address Range 172.16.0.0/16 and able to connect to VPN successfully and got an IP 172.16.0.2
My Network security group allowing RDP from any to any 
I tried to RDP the VM with private IP but I cant succeed though the connection troubleshoot of the VM is showing no issue.
I can connect to VPN
My NSG not blocking
Connection troubleshoot not showing any error
What could be possible issue. ( I turn off Firewall in serves as well)