azure powershell can't find resource (vm) by name

Question

I am trying to increase the size of my azure linux VM disk through powershell as the azure portal dashboard can't do it for this VM. I am having trouble getting the VM in the resource group, it can't be found.

Note the resource group and resource name are the same. Is there an alternative way of getting the resource, I have tried by ID but no luck

Select-AzureRmSubscription –SubscriptionName 'BizSpark'
$rgName = 'abc'
$vmName = 'abc'
$vm = Get-AzureRmVM -ResourceGroupName $rgName -Name $vmName

The error am getting is

Get-AzureRmVM : The Resource 'Microsoft.Compute/virtualMachines/abc' under resource group 'abc' was not found.

Answer 1

According to your description, it seems that your have multiple subscriptions and your VM is not in your default subscription. So, you need select correct subscriptions. Please refer the following steps:

1.Determine your subscription name and subscription id in Azure Portal.

2.Change the default subscription.

Get-AzureRmSubscription
Select-AzureRmSubscription -SubscriptionName "your subscription name"

Update:

If your VM is based on classic VM, you need use Get-AzureVM to list your VM.