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Support Article

Some LDAP users cannot login to the Pega application



When a user login into the Pega application, while some set of users are able to login. This application uses Active Directory for authentication.

"Authentication failed: User not found in directory"

Error Messages

"Authentication failed: User not found in directory"

Steps to Reproduce

1. login to the pega application & notice the error on the screen.

Root Cause

A defect or configuration issue in the operating environment. Problematic user belongs to different group in Active Directory, hence the error message 'User not found in directory'.


Here’s the explanation for the reported behavior: 

Since these two group of users in directory are under different node in directory, created second LDAP authentication service in Pega to authenticate second set of users and given different URL so they can be authenticated accordingly & access the application.


Published February 27, 2016 - Updated October 8, 2020

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