Windows 8.1 upgrade error 0xC1900101 - 0x20007

Trying to upgrade to Windows 8.1 from my 64 bit windows 8 pro system.

My System config is as below:

Processor: AMD a6 - 3400M APU with Radeon(tm) HD Graphics 1.40 Ghz | 64-bit, x64 based processor RAM: 8.00 GB
Graphic Card: AMD Radeon HD 6470M 1 gb

I had daemon tools installed previously that I've already removed. I don't have any USB devices connected, using my internet over wifi.

Here is my Windows upgrade log.

Any help is appreciated.

P.S. Look for 20th October Afternoon details in Log.

Thanks,
Sanket

I got the same error when I tried to upgrade. From what I could figure out by searching online, this has happened to systems upgrading from 8.1 Preview to 8.1 with a machine that is dual-booting Linux and Windows.

Is this the case with you as well? If yes, maybe the only way is to roll back to Windows 8, and then try again. Another way you can do it is to replace GRUB2 with the stock Windows bootloader, and try again.