After downloading and verifying the ISO build 10074 still running into errors when trying to install windows 10 from boot-up for a dual boot installation.
The ISO disk is read for a little while and then displays the 0xc000021a error which just causes a boot-loop.
I'm greatly concerned with windows 10 not being too far from release that Microsoft has not spent enough time on the installation mechanism to resolve all possible update configurations.
As per normal with MS error - no information is given on why I am getting the error as Windows 7 works with no issues. Secondly I am trying to install to a blank/formatted new drive (for dual boot) but I cannot even get that far as it seems to be trying to validate my current installation.