I have been searching for a fix for this issue for sometime.
The VM and host networking components failed to negotiate protocol version '5.0'
and
The VM and host networking components failed to negotiate protocol version '4.0'
this error have been posting on the host server 2008 R2, with a hyper-V running server 2012 R2, which is the eval version vhd from Microsoft.
I have tried the patch on the server 2008 R2 host and the nic delete and rescan option with varied reboots and such between each step of the process just to try every possible combination.
The error persists. Are there any other suggested solutions for fixing this problem. Also the drivers have all been updated along with the system firmware.
thanks,