Bug When Converting (Back) To Local User Account

Question

I am using Windows 8.1 Pro and began by setting up a local user account, which is the Administrator account. I then successfully switched the account to a Microsoft account, with the same user name.
As a test, I then decided to switch back to a local user account.
The bug is that I was not permitted to use the same user name. I had to select a different user name. This defeats the purpose of transparently switching a from a Microsoft account to a local account.
Fortunately (for me) I had anticipated that something might go wrong and had performed a full system backup to a external USB drive before I began this switching test.
L.M.Cohen

Answer 1

While Windows 8.1 (Pro) allows you to create new User accounts, it is set up to "convince" you to create Microsoft-type user accounts, rather than local user accounts.
And if you try to convert a Microsoft-type account to a local user account,
with the same user name, it will not yet you do it. However it will allow you to convert in the opposite  direction,
with the same user name.
So I started all over and carefully read the small print -- to learn that you can initially set up a local user account. But this is discouraged, but if you persist, it can be done -- even though it is implied that "the sky might fall."
This is disingenuous.
However now that I understand the dynamics, I have no more problems.
Regards,
L.M.Cohen
L.M.Cohen