Tool to check Hyper-V Cluster - Updates/Driver/Firmware Consistency Report

Good job.

A PowerShell script for Hyper-V Administrator to identify the consistency of Windows Updates, HBA Drivers, HBA Firmware, Network Interface Drivers etc

Security Guide for Hyper-V in Windows Server 2012

Link to MSDN

‘Unnamed VM’ could not initialize… The security ID structure is invalid (0x80070539)

Why does Grant-VMConnectAccess allow you to resolve this issue?
Excellent explanation is in this blog post.