Reconnect to Azure Virtual Machine

Q: I configured my Windows Azure IaaS virtual machine with a static IP address, and now I've lost connectivity to it. What can I do?

A: Windows Azure IaaS doesn't support statically assigning an IP address to a virtual machine. All IP addresses must be assigned through DHCP by Windows Azure. Even if you statically assign the same IP address that was dynamically assigned via DHCP by Windows Azure, you'll lose connectivity at some point as Windows Azure updates its routing. If you want control of the IP addressing, you should create virtual networks with specific virtual subnets in Windows Azure—which will allocate IP addresses to virtual machines from your defined IP ranges.

At this point, if you've lost the ability to communicate with your virtual machine, there's no way to reestablish that communication or change its IP address. The only course of action is to delete the virtual machine but keeps its virtual hard disk and then create a new virtual machine using the existing VHD.

After the virtual machine is created, you'll be able to connect again.