Failed to add device Microsoft Synthetic Ethernet Port ...

Tried to start a VM from another server and got the following error.

" Failed to add device Microsoft Synthetic Ethernet Port ... "


The server has MS Forefront Client Security AV onto the server, hence need to set exclusions for the VM files

This chap found the solution...

http://joshrobi.blogspot.com/2008/06/how-to-fix-hyper-v-error-failed-to-add.html