Cannot add VM to Standard Azure Load Balancer

Question

I have an Azure standard internal load balancer inside a VNET that contains several virtual machines. Two of the VMs are not listed as options when I want to add them to a back end pool of the load balancer. They are were created under ARM and not included in any other load balancer pool. They are also in the same VNET that is associated to the backend pool.

If I create a basic load balancer, I can see them and successfully add them to the pool. Is there documentation on the VM requirements that must be met before you can add a VM to a pool within a standard load balancer?

Answer 1

When you add the backend pool, you will see Only VMs in the same region with standard SKU public IP or no public IP can be attached to this load balancer.

In this case, you can randomly disable the public IP address from the virtual machine---network interface---Ip configurations---ipconfig1---disabled---save. Then you can add the desired VMs to backend pool again.