All Mac computers need an administrator account to be able to function properly and perform certain tasks, ranging from installing certain software, to changing some system preferences. A variety of situations can arise causing a Mac to lose an administrator account, often if a user attempted to add a new admin account or new user account to the Mac, or rename an existing users account. 

Whatever the case, if the Mac does not have an administrator account available, here’s how you can add an admin account to macOS in macOS Monterey, Big Sur, and earlier.

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