AD/LDAP Connector Overview

Auth0 integrates with Active Directory/LDAP through an AD/LDAP Connector installed on your network.

The AD/LDAP Connector acts as a bridge between your Active Directory service and the Auth0. This is necessary, since AD typically runs and is accessible to your internal network, while Auth0 is a cloud service (and therefore running in a different context from your AD service).

AD/LDAP Connector and Your Customer's Servers

The AD/LDAP Connector is designed for scenarios where your company controls the AD/LDAP server. The connector should not be installed on your customer's servers.

For B2B scenarios where you want to allow your customer's users to access your applications using their enterprise credentials, connect to your customer's federation service (e.g., their own Auth0 service, ADFS, or any SAML identity provider) using one of the available enterprise connections.

Installing an AD/LDAP connector on your customer's servers that is then connected directly to your Auth0 domain results in you handling the passwords of your customer's users directly. Auth0 strongly recommends against these types of deployments and does not support them.

The Connector supports authentication based on the following:


By default, an AD/LDAP Connection caches user profiles and credentials to ensure optimal uptime and performance (note that Auth0 stores a hash of the user's password). This data is updated each time a user logs in. The cache itself is only used when connector is down or unreachable. The cached data is always stored unless caching credentials is disabled.

To disable credential caching at the connection level:

  1. Go to Dashboard > Enterprise Connections
  2. Click on the Settings icon for the Active Directory / LDAP connection
  3. Toggle Disable Cache

Values in the cache are case sensitive, which means that login attempts will only succeed if end users provide the exact username that was cached.


  • All connections from the Connector to the Auth0 Server are outbound only, so you do not need to make any changes to your firewall.
  • For high availability and load balancing, you can install multiple instances of the AD/LDAP Connector.