Hi Dave Axam,
Welcome to Microsoft Community.
Administrator permissions are an important part of the administrator account.
Administrator accounts under the Administrators group and the administrator account govern each other.
The steps that the Answers community can provide in relation to account operations are based on the available backup administrator account.
If no other administrator account exists on the device, we are unable to perform further actions in such cases.
The following threads, summarized by community members, describes the idea of reconfiguring local accounts with the help of Windows installation media.
The idea is usually applied in scenarios where login is blocked by the lock screen interface.
Due to the account permissions in our domain environment and the rarity of the background of the problem you are experiencing, it is difficult for us to perform further testing to ensure that this idea is applicable to your scenario.
If it is not available, you may need to consider using other means (involving a reset, reinstallation of Windows) to regain ownership of your device.
| Disclaimer: Please back up all your important data before performing it. |
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Thanks for your patience and understanding!
Best Regards,
Kyo - MSFT | Microsoft Community Support Specialist