Explanation
Get an access token using the VM's system-assigned managed identity and use it to call Azure Resource Manager You will need to use PowerShell in this portion.
In the portal, navigate to Virtual Machines and go to your Windows virtual machine and in the Overview, click Connect.
Enter in your Username and Password for which you added when you created the Windows VM.
Now that you have created a Remote Desktop Connection with the virtual machine, open PowerShell in the remote session.
Using the Invoke-WebRequest cmdlet, make a request to the local managed identity for Azure resources endpoint to get an access token for Azure Resource Manager.
Example:
$response = Invoke-WebRequest -Uri '
http://169.254.169.254/metadata/identity/oauth2/token?api-version=2018-02-01
&resource=https://management.azure.com/' -Method GET -Headers @{Metadata="true"} Reference:
https://docs.microsoft.com/en-us/azure/active-directory/managed-identities-azure-resources/tutorial-windows-vm