I originally posted this question here:

answers.microsoft.com/en-us/insider/forum/insider_wintp-insider_update/window-10-build-10041-does-not-work-with-intel/6729892f-83aa-4822-b20a-ea84f4fd06c7

and was asked to post it on this forum...

I updated a computer I have which is a quad core i7 that I built and includes an ASUS motherboard with Intel 82579V Gigabit Ethernet built in. Windows 10 preview 9926 worked fine with this network adapter. Window 10 build 10041 does not, and I have tried it twice so far. I even went as far as buying a Thunderbolt-Gigabit Ethernet Adapter (Broadcom, sold by Apple)... and while it installed the driver automatically, it did not work either. Each time you try to view the properties of either of them, it locks up or give an error. In fact, doing much of anything with the Intel adapter icon assures you of not being able to do a clean reboot... have to kill power.  I have finally gone back the previous version 9926, which has its issues but no where near as bad as not having any network connectivity!  Does anyone have this issue and a workaround? 

Note, there are two images on the windows 10 preview forum that I posted this question on. I could not post the full link as I was getting a message here that links and graphics are not allowed.