https://devicemanagement.microsoft.com 

Go to Devices > Windows > Windows Device enrollment

Click on Windows Hello for Business and at the bottom, at the "Configure Windows Hello for Business" select Disable, Save

If the Tenant doesn't have an EMS or Intune license associated with it then you will need to sign up for the free trial - https://portal.office.com/signup/logout?OfferId=40BE278A-DFD1-470a-9EF7-9F2596EA7FF9&dl=INTUNE_A&ali=1#0%20. If you do this while logged in as the Global Admin for the Tenant then it automatically detects the credentials etc..

OR

Method 2: Using Group policy settings.

If you are on Windows 10 Pro edition, you can change the group policy settings to disable PIN sign-in option for all users.

OR

• Open the Run dialog box by pressing the Windows key and the R key together.

• Type GPEDIT.MSC and hit the Enter key.

• Go to Computer Configuration -> Administrative Templates -> System -> Logon.

• On the right side, double click on Turn on PIN sign-in and select Disabled.

• Similarly disable the other Windows Hello options if any.

• Exit the Group policy editor and reboot the computer.

  Method 2: Disabling Windows Hello in Registry.

  If setting Group policy doesn’t work, you may disable the sign in options which should disable

  Windows Hello options in all user accounts.

Disclaimer: The registry is a database in Windows that contains important information about system hardware, installed programs and settings, and profiles of each of the user accounts on the computer. Windows often reads and updates the information in the registry.

Normally, software programs make registry changes automatically. You should not make unnecessary changes to the registry. Changing registry files incorrectly can cause Windows to stop working or make Windows report the wrong information.

Please take a backup of the registry. Follow the steps given in the link below:

How to back up and restore the registry in Windows

• Open the Run dialog box by pressing the Windows key and the R key together.

• Type Regedit and hit the Enter key.

• When the Registry Editor opens, navigate to the following location:

• HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\PolicyManager\default\Settings\AllowSignInOptions.

• In the right pane, double click on the DWORD entry named value set it to 0.

  The above method will disable Windows Hello for all user accounts. If you want to re-enable

  it, change the DWORD entry Value back to 1.