After getting the Dread cannot bind error on hyper-v 2008r2.i looked around internet to fix:

To fix it open the command prompt on Hyper-V Server 2008 R2 and run:

netcfg -u vms_pp

netcfg –l c:\windows\winsxs\amd64_wvms_pp.inf_31bf3856ad364e35_6.1.7600.16385_none_beda85050b13680c\wvms_pp.inf -c p -i vms_pp

This wecked Hyper-v so beware, then i did following:

start /w ocsetup Microsoft-Hyper-V /uninstall

Then

start /w ocsetup Microsoft-Hyper-V

Bingo was his name o