@McKim, Geoff
You should be able to get the full extension version by running the below command from either Azure Cloud Shell or Azure PS for Desktop:
Connect-AzAccount -Tenant "tenantID"
Get-AzVmDiskEncryptionStatus -ResourceGroupName 'RGname' -VMName 'VMname'
For more info.
If you have any other questions, please let me know.
Thank you again for your time and patience throughout this issue.
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