Disable password authentication
You can disable password authentication if you've configured an alternative sign in method. Otherwise, password authentication is required and can’t be modified.
To disable password authentication
In the Managers () menu, select Account.
In the Account menu, go to Accounts.
On the Accounts page, select the Name of the account.
On the Account details page, in the Sign in settings for all-account-access users section, the Password pencil (edit icon).
On the Manage password page, select Disable standard sign in (for accounts with alternate sign in methods configured).
Select Save.