When do you need to see what updates had been installed on your Hyper-V server, you can use this PowerShell cmdlet to list all the updates.

Get-WmiObject -Class Win32_QuickFixEngineering | select description,hotfixid,installedon

Then if you need to compare if all the nodes of your cluster or if your Hyper-V server have the same patch level just run this cmdlet remotely through PowerShell ISE.

If you need help run remotely PowerShell cmdlet, just see one of my previous post (Managing Hyper-V Server remotely through PowerShell)

Cheers,

Marcos Nogueira azurecentric.com Twitter: @mdnoga