"Couldn't update to Windows 8.1 - 0xC1900101 - 0x40017"

I FINALLY SOLVED IT!!

After nearly 2 years of headache I finally got it through without resetting the system (by the way thank you MS for doing nothing)

It's basically some kind of conflict between the upgrade and your sata driver, all you need to do is set your sata driver from AHCI to IDE before upgrading to 8.1, but switch from AHCI to IDE in Windows 8 takes bit of a hassle. 

Now read *carefully* in these two links (a big thank you to those guys)

http://cwthenerd.com/?p=262

http://reboot.pro/topic/19467-booting-win-881-in-ide-or-ahci-mode-by-only-changing-bios-setting/

I believe it will solve 0x40017 which bothers you for so long, and don't forget to switch back to AHCI after the 8.1 upgrade is done, good luck!

I checked setupact.log and found the code 0x40017 at the very end of this large file, but I don't have a clue where to look for the error, I search 'error' through the log file couldn't find anything interesting.

now I wonder how can I send this file to Microsoft.

I too have a P9X79 Deluxe motherboard.  I was finally able to install 8.1 from a complete reinstall of Windows 8.0, something I was resisting for a long time.  My point though is I reinstalled with whatever Version 8 had to offer in drivers - non of my own Asus, NVIDIA, Intel, etc. drivers were used.  I also disconnected all non-essential peripherals before the reinstall.  Once Win 8 was reinstalled, I installed 8.1 (as an update) without a problem. I then hooked up all left-out peripherals and installed all my own drivers.

I agree, its a pain, especially when you have a boat load of programs that have to be reinstalled afterward, but there is something to be said about unloading accumulated junk and non-essentials.

Anyway its over for now and it worked.  Hope this gives you hope.  Until next time.

David B.

I don't understand why it shows the mouse cursor twice during the upgrade process (each before a reboot).

That could be a clue.  Do you have Touch?  You wouldn't need your mouse then.  In fact, I'm not sure but you might not need it at all anyway, especially if you can get Mousekeys working and have a full keyboard (or at least a real Numeric keypad) to run it.  Or if you have another mouse you could try using it instead.

BTW you may find some easier to interpret clues in the *.log files in that same Panther directory.

Good luck

Robert

I was able to find the dmp file, but unfortunately it did not provide any useful information:

On Sat 6/13/2015 3:30:42 AM GMT your computer crashed

crash dump file: C:\Windows\Minidump\setupmem.dmp

and how did you find that minidump? how to enable it? I didn't find any solution for enabling that despite the fact I got minidump enabled in the system.

It was somewhere in the hidden folder for the update, on my system it would be in one of these folders as setupmem.dmp   C:$Windows.~BT\Sources\Panther 

I tried the upgrade a few more times and they did not create a dmp file and the previous one appears to be gone now.

I disabled everything I could in the BIOS, disconnected all but the Primary Drive and moved it to the Intel SATA channel and it still refused to complete the upgrade.

I don't understand why it shows the mouse cursor twice during the upgrade process (each before a reboot).