Updating Hyper-V from 4.2-3202 to 4.3

[andymiller6891]

I have managed to get 3202 running today but would like to upgrade to 4.3 to match what I have on my NAS box.

 

I have tried several downloads today but keep getting error 21 when I load in the pat file.

 

Any ideas on how to update or anyone know what error 21 means??