Windows 10: Fails to Upgrade to Windows 10 v.1511, 10586 (Nov.update)!

UPDATE:
Eventually, my laptop became so corrupted, it would no longer boot up. The last MS tech I talked to recommended a fresh install but the Asus' HDD used GPT formatting so I had to reformat the drive to reinstall Windows 8.1. Then came all the driver downloads from Asus and all the installations, then came all the 169 KB updates from Microsoft, then came the audio and bluetooth functions not working, then came the phone calls to Asus Tech support to find out why, then came the calls back to MS Windows support to find out why the fresh install was behaving so flaky, then came the realization that I don't need all this grief, then came the AH-HAH moment when I bought a MacBook and all my troubles became wonderfully resolved...

(WHEW!)

 

Sorry to necro-post, but I'm desperate for some help.

My rig is stuck on Windows 10 version 10 (build 10240). I was troubleshooting for about 7 hours last night, but I couldn't find any way to get my Windows 10 build to update from 10240 to 10586 without reformatting my SSD. I bought a new MSI GTX 1070 Gaming X that I can't use until this is resolved.

Specs:
Windows 10 Pro ver 10 build 10240
Asus Maximus VI Formula
Intel i7 4770-K
MSI GTX 1070 Gaming X
Corsair Dominator 16GB 1866
SAMSUNG 840 SSD 500GB
Corsair AXi 1200
Various WD/Seagate HDDs

Just to knock the basics out of the way, it's definitely powered on and in a functioning PCI-E lane (I had a 770 and 660 in there recently) and DEFINITELY generating heat. It's also in a PCI-E 16x lane.

I've tried:

1) Updating my BIOS, chipset, bluetooth, wi-fi, lan, etc drivers (updating Windows fails)
2) Running sfc /scannow in an elevated command prompt (it completes successfully and says there are no corrupted files and updating Windows fails)
3) Running Dism /Online /Cleanup-Image /RestoreHealth and then rerunning sfc /scannow in an elevated command prompt (it completed successfully without any issues and updating Windows fails)
4) Using a script from Rahul that runs in an elevated command prompt to find and clear the Windows Update history/cache (it completed successfully without any issues and updating Windows fails)
5) Creating an ISO of Windows 10 build 1511 to install while keeping all files (updating Windows fails)
* Is there a difference between using the setup located in the main directory of the ISO over navigating to sources and using the setup launcher in there?
* I tried both, but the setup launcher in sources prompts me for an xxxxx-xxxxx-xxxxx-xxxxx-xxxxx key that I am no longer in possession of. If I try to skip it tells me that that it will not update.
6) Using Windows Media Creation Tool to do the same thing (updating Windows fails)

I went to the following for my Windows 10 resources: https://www.microsoft.com/en-us/software-download/techbench

No matter what I do, I can't get Windows 10 to update to build version 1511

I can't update, so I can't use my new MSI Gaming X 1070.

Anyone got any ideas?

 

Hi, any luck? I have similar issue. It's completedly download and install..but at reboot, it will return to previous version. I tried the methods suggested 1-6.