A frequently asked question, or a set of related questions, are: Is there a policy that limits which VMs are available for a particular subscription? Do we show all VMs in NMW? How does NMW query available VMs for a subscription or region?
Let's review some background information first. When you add a static/dynamic host pool under your AVD tenant, you need to provide the following details along with the VM size:
The list of sizes shown in the "VM size" drop-down are as per your NMW app subscription and region. NMW app uses the URL given below to get a list of available VM sizes:
If any VM size is not available for a subscription or region, it doesn't appear in the list. At times, even if a VM size is available in a specific Azure region, it cannot be used due to the subscription having restrictions on a particular size. In such cases, we show the VM size in the drop-down, but don't allow users to select it (the size is disabled).