If you’re like me, you have probably banged your head against the wall a few times with the Login-AzureRmAccount cmdlet… I reached out to the Azure Development team and not only is this a known issue, but there is currently no solution at the time…. Hmm.
Here is a bit of the background story, followed with the problem and solution to the issue.
Using PowerShell to script an auto-login to Azure, and start (and shutdown) Virtual Machines (yes, OMS Automation could help/solve this, but in this scenario my customer is currently not on-board with OMS). At any rate, the script is designed to capture some data on a on-premises server, if the threshold breaks, then begin starting resources in Azure, likewise, if the threshold falls back then shutdown those same resources in Azure.
Running the following code, I keep getting the a null entry for SubscriptionId and SubscriptionName. Even though the user I have created is a co-administrator and has access to all the resources necessary. Assuming the login did work and the data isn’t needed…when try to start my Azure VM I get an Azure subscription error. So, let me check the subscription details. Well, there we go, I get the following response, “WARNING: Unable to acquire token for tenant ‘Common’” ….. So what gives?
I check and confirm the test-user is in-fact an administrator in ARM (Azure Resource Manager):
Turns out, the user account created, not only needs to be created and added to the resources with Azure Resource Manager (ARM), but also needs to be assigned as an Administrator within Azure Classic Portal.
Once the test-user was added within the Classic Portal Administrators and set as Co-administrator, I could then get SubscriptionId and SubscriptionName info populate, and Get-AzureRmSubscription with proper details. Yay! (Still get that tenant ‘Common’ warning however…)
Now I can go ahead with my script!
I hope this helps you as much as it helped me.