Okay, I followed the tutorial steps that I had to follow (*) and, after a couple hours, had a "repaired" 64-bit 8.1 Pro OS. Looking over regular logs that existed I noticed a couple things (1) there were lots of errors and failures (for example, the Store apps are still giving errors in the event logs like:
and (2) at least the DISM log was weirdly different looking - perhaps a remnant of the repair rather than "new" format - here's a small sample:
The Appx operation 'RegisterPackageAsync' on 'Microsoft.ZuneVideo_2015.509.636.3316_neutral_~_8wekyb3d8bbwe' failed for user 'email@example.com' - error 0x8007064A: Cannot register the request because the following error was encountered while initializing the windows.repositoryExtension extension: The configuration data for this product is corrupt. Contact your support personnel.
.. (Error: Package could not be registered.)
And, yes, those are Chinese characters and they continue for thousands of characters at the end of the dism.log - note, however, that the regular English entries are not as expected, either, not having timestamps, for example.
... ImageUnmarshallHandle: Reconstituting wim at \\?\GLOBALROOT\device\harddisk0\partition2\Recovery\WindowsRE\Winre.wim.
 Received unmount request for image with guid 2940a068-25e9-4619-8a34-8e8c72b63625.
 Unmount for image at C:\WINDOWS\TEMP\e1845a69-8ec7-4a0e-a8d9-f929182e6912 complete.
Okay enough with that.
More importantly and noted just above the "pink" tutorial instructions...there are now 147 updates to install.
So...is there a list somewhere about 64-bit 8.1 Pro updates that are suggested NOT to install? You know, like the KB3035583 Recommended update, etc.
If not, it's gonna be a rather long rest of the week recovering as I figure out which updates aren't necessary or perhaps not desirable.
(*) The repair install wasn't totally like the described repair install of the tutorial - for example, there was no request to input a Product Key at all nor was there a licensing agreement. Checking after all was said and done says this system is an activated Windows 8.1 Pro as it should be. It should be noted that the Windows.ISO file being used was created with the Media Creation Tool yesterday so perhaps the dialogs presented have been changed since the tutorial was written (for example, the Express Settings dialog had a considerably longer list than the one here in the tutorial).