Allow Resizing (Lowering) of Managed Disks
The ease in which we can increase disk space should be the same for reducing disk space.
I created a VM very first time, I was not aware that I will be charged for Disk too. Azure selected Premium SSD 128 GB. In my case I just wanted to run a single exe on VM, so I don't need disk at all.
I wanted to Resize disk to 64GB but I found that it is not possible.
I was assisted by Support team that I have to remove machine and recreate it with lower disk size.
That process really affects our business.
I needed (temporarily) to increase the size of my disk but now I can't reduce the disk easily and the costs have doubled. I've reverted back to unmanaged disks until this is sorted out.