Loked out: Windows 8.1 administrator account disabled

Posted by Gregory MOUSSAT on Super User See other posts from Super User or by Gregory MOUSSAT
Published on 2014-06-05T15:11:09Z Indexed on 2014/06/05 15:27 UTC
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windows-8.1

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administrator

I installed a Windows 8.1 laptop.
By default the Administrator account is disabled. During the install process, the user created belongs to the administrators group (call it FirstUser).

I installed various softwares, I created a normal account for the user (call it RealUser), and I mistakenly deleted FirstUser account (while I was connected under this account). I rebooted and... oh well, I understood the mistake. I no longer have access to any administrative privileges.
The laptop is still in workgroup.

I tested with Offline Windows Password & Registry Editor (latest version):

activated Administrator account, and blancked its password (no option to set a new one)
gave RealUser account administrative privileges

After reboot, only RealUser account is still available.
Once logged in, I'm unable to access anything requiring administrative provileges.

Does anyone know a way to successfully activate the Administrator account, or whatever ?

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