Hi Liz Popp,
I am following up on this because losing administrative control over your own hardware is a critical obstruction.
If performing the system reset is not an option—perhaps because you have already generated data on the drive that cannot be backed up—there is only one non-destructive technical alternative: you must physically hand the device to your organization's IT department. Since the device is now domain-joined to their cloud tenant, a user holding the "Global Administrator" or "Azure AD Joined Device Local Administrator" role within the organization can physically log into your laptop's Windows lock screen using their own corporate credentials. Once authenticated, they will have the elevated privileges required to access the Computer Management snap-in (compmgmt.msc) and manually add your user profile to the local "Administrators" group.
However, if you do not have access to an IT administrator with those specific cloud roles, or if this is a personal device where you cannot wait for enterprise support, the reset via the Windows Recovery Environment (Shift + Restart) remains the definitive fix. It is the only mechanism that forcibly strips the Entra ID token and allows you to re-initialize the Security Account Manager (SAM) database with yourself as the owner.
I hope you've found something useful here. If it helps you get more insight into the issue, it's appreciated to accept answer. Should you have more questions, feel free to leave a message. Have a nice day!
VPHAN