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Support Article

LDAP authentication not working



LDAP authentication is not working in Pega.

Error Messages

User sees the error "Unauthenticated or not available when logging in using LDAP url.

Steps to Reproduce

Not Applicable

Root Cause

A defect or configuration issue in the operating environment. LDAPAuthentication activity was used in the in the authentication service rule for LDAP authentication, which adheres to PRExternal scheme of authentication and is deprecated.


Perform the following local-change: Change the LDAP authentication service to call AuthenticationLDAP activity which uses PRCustom scheme for authentication.

Published April 1, 2016 - Updated October 8, 2020

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