I have gone round robin trying to get help on this issue. Everyone I talk to or communicate with puts me off with some excuse. I have win 8 pro installed on my PC. I obtained the copy though TechSoup as a charitable organization therefore I have a Volume License copy with a MAK product key. I recently purchased win 8.1 pro using the same procedure. When I try to update system installs then reboots, then starts to install setup. If I am trying to install keeping my files, it stops at setup 4%. If I try a clean install, it stops at 14%. After re installing original OS, system returns message "could not upgrade" error code 0x80070570-0x2000c.
I have been a loyal MicroSoft user for over thirty years. I have used every windows OS made but I am stuck on this one.
Please help!!!