Disabled administrator account on Windows 10

Having disabled my own account on Windows 10 twice(!) by mistake (with no other accounts available for login) there is a nice and easy tip for solving this. Google has lots of tips on how to solve it, with everything from reinstallation to entering the command prompt at shift-reboot but none of these tricks worked for me. Mostly because no accounts are available at the shift-reboot command prompt and a reinstallation seems a bit over the edge.

Instead, use the following trick:
https://4sysops.com/archives/reset-a-windows-10-password/

In short:
1) Boot from a Windows 10 CD
2) Start a command prompt
3) rename utilman.exe in c:\windows\system to utilman_old.exe
4) copy cmd.exe to utilman.exe
5) Reboot
6) Click the Easy-of-access icon at the Welcome screen and the Command Prompt should start
7) Type net user [your-user-name] /active:yes
8) Reboot.
9) ???
10) Profit!