Configuring Active Directory domains or Kerberos realms
You can configure an Active Directory (AD) domain or Kerberos realm to authenticate users.
Steps
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Go to System > Data & Credential Stores > Active Directory Domains/Kerberos Realms. 
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From the Manage AD Domains/Kerberos Realms window, configure the AD environment to integrate with PingFederate. For more information, see Configuring the Active Directory environment. 
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Click Add Domain/Realm to create an AD domain. Do not configure subdomains if the parent domain in the same forest is already configured. For more information, see Multiple-domain support. Click the name of an existing domain to edit it. Use the Delete and Undelete links to remove a domain or cancel a removal request.