First, see this post for explanation for my longer than expected absence: Today [7]
OK, some unanswered questions:
When rebooting to Audit Mode (tutorial step 1: Install Windows 10), Windows Setup temporarily activates the built-in Administrator account, and creates a folder for it in C:\Users.
When Sysprep is then run, and Users folder relocated, Windows Setup boots back to OOBE. User accounts are relocated, and the C:\Users\Administrator folder is now empty, because Sysprep again deactivated the built-in Administrator account.
This is totally normal, and you can delete the whole C:\Users folder.
Good to know you got it fixed!
I remind you about the warning at the beginning of Method Two:
Do not proceed before creating a system image!
Sysprepping an existing installation with an OEM pre-installed Windows is risky. Manufacturers might have their own unattended answer files in place which ignore your custom unattended files. Anything can go wrong when sysprepping an existing installation, I do not recommend doing this.
If you decide to try it and it fails and you post about it, I will remind you about this warning asking you to restore the system image you made before proceeding.
Short: Relocating Users folder with Sysprep should only be done on new, clean installs! Trying this Method Two, relocating Users on an existing installation might force you to do a complete reinstall or restore your PC to factory state.
That being said, just to be sure, I have today tested Method Two on both a physical and a virtual Windows 10 installation. Both succeeded without any whatsoever issues.
You have two options: clean install and Method One as in this tutorial to make all user profile folders you later create to be relocated, or manually move user folders one by one as told in this tutorial: Move Location of Documents Folder in Windows 10
Only possible explanation is, that when you type the command, there's a typo. Next time you try it, please take a screenshot of the Command Prompt window showing your typed command and post it here, I will need to see how you typed the command.
Yes, both the method and tutorial are still viable and accurate, working perfectly
It's he / him, not she / her
Method One works perfectly on clean installs, tested today on both physical and virtual installations.
Again, it's he / him, not she / her.
Relocating the whole Users folder has worked perfectly since Vista days. My first tutorial about this method was published over 10 years ago on our sister site, Seven Forums: User Profiles - Create and Move During Windows 7 Installation - Windows 7 Help Forums
Only one thing has changed since that: since Windows 10 version 1511, you do not have to relocate users back to C: drive when upgrading Windows 7 to Windows 10. This from this very tutorial:
Please notice that with the Build 10586 (TH2 version 1511) and later there has been no issues in upgrading even with relocated Users folder.
If upgrading from Windows 7 with not only the Users folder but also the ProgramData folder relocated, you have to move ProgramData back to C: drive before upgrading as told below. Windows 10 does not support relocating Programdata, nor can you upgrade with relocated ProgramData. This is not necessary if the ProgramData folder is not relocated.
Kari