We have a DNS server registered via the Azure portal along with a virtual network. VMs are joined to an Active directory domain hosted in an azure vm.
Recently we increased the VM size of one our VM from A3 to A4. After the reboot the ip, DNs, gateway values were present and correct. Unfortunately we lost the ability to communicate with other vm in the same azure virtual network.
The other vm were still able to communicated with each other except for the vm that was resized.
Reverting back from A4 to A3 the network communication was restored. I re attempted scale up to A4 and the network communication was lost again. Reverting back from A4 to A3 restored the network communications.
I had scaled the same VM from A2 to A3 a few days prior with out any issues.
Any one out there with a similar experience?