To disable local authentication in ADFS v2.1 and ADFS v3.0, perform the following steps:

• Navigate to “C:\Windows\Adfs”

• Edit the file "microsoft.IdentityServer.Servicehost.exe.config"

• Edit the following section as follows, and save afterwards:

<microsoft.identityServer.web>
<acceptedFederationProtocols wsFederation="true" saml="true" />

<localAuthenticationTypes enabled="false">

</localAuthenticationTypes>