If you don’t see this option for your selected user account, the account isn’t local and thus cannot have its password deleted.
If you see an error message after doing this, you aren’t using an administrator account and thus cannot delete other users’ passwords.
For example, if the account name was “JohnSmith”, you’d type net user “JohnSmith” "" into Command Prompt. If the account name has a space in it (e. g. , John Smith), type an underscore where the space would be (e. g. , John_Smith).