All VM sizes are not showing while resizing the VM in Azure

If your VM is still running and you don't see the size you want in the list, stopping the virtual machine may reveal more sizes.

Hi Abhi Sahu,

As per my understanding, you cannot resize your VM from B2s_v2 to B4ms because of the underlying hardware differences and restrictions in Azure VM resizing. Azure does not allow resizing between VMs with resource disk and non-resource disk hardware. You can see in the below images that B2s_v2 does not have a Local storage and B4ms has Local storage of 32GiB. For more information, you can refer to this https://zcusa.951200.xyz/en-us/azure/virtual-machines/azure-vms-no-temp-disk#can-i-resize-a-vm-size-that-has-a-local-temp-disk-to-a-vm-size-with-no-local-temp-disk

If you want to switch to Standard_B4ms, you need to redeploy the VM: Deallocate and Detach the OS Disk and Create a New VM with B4ms. Then attach the old disk to the New VM.
Alternatively, you can try this. If you want to avoid redeployment, you can resize to a compatible B-Series v2 size which has same vCPUs and RAM equal to B4ms.

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