Built-in Administrator account is missing from my Windows 11 Pro system

Question

The built-in Administrator account is missing from my system.

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Microsoft Windows Version 10.0.26100.4652 Microsoft Corporation. All rights reserved.
C:\Windows\System32>net user
User accounts for JIM-DESKTOP
DefaultAccount Guest Jim
WDAGUtilityAccount WsiAccount
The command completed successfully.

C:\Windows\System32>net user administrator /active:yes
The user name could not be found.
More help is available by typing NET HELPMSG 2221.

C:\Windows\System32>

How do I get it back?

Answer 1

Ok. Let me know how it goes.

Additional note:

This is what's shown if I double-click "Administrator" in the lusrmgr.msc applet.