A tool for managing user identities, credentials, and access across on-premises and cloud environments
In base Windows, for one account to be able to be able reset the password of another account, that first account would need to be a member of the Administrators group.
So, if the account that you are logged in to the PC with already has admin access, there is no need to use the built-in account named Administrator. You are already an administrator.
Open a command prompt and run these 2 commands.
whoami.exe
net.exe localgroup administrators
Do you see your account (from the whoami output) listed in the net.exe output?
You tagged this as a "Microsoft Identity Manager" question. How does your problem relate to that software?
What is the root issue that you are trying to solve? That is, I have several PC's and VM's on my home network. I don't think that I have ever used the Administrator account. What are you trying to do?
Did your account somehow get removed from the Administrators group?