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OUD 12c Pass Through Authentication (PTA) to AD Fails with Log Error: "000004DC: LdapErr: DSID-0C090A5C, comment: In order to perform this operation a successful bind must be completed on the connection., data 0, v4563" (Doc ID 2930469.1)

Last updated on FEBRUARY 28, 2023

Applies to:

Oracle Unified Directory - Version and later
Information in this document applies to any platform.


Oracle Unified Directory (OUD) 12c Proxy & Load-Balancing

OUD Pass Through Authentication (PTA) to AD fails with error from the access log:



PTA did work on this environment before and no known change on OUD/AD side, other than a restart of OUD due to OS patching. Rolling back the OS patches does not resolve the problem. The AD service account is set to never expire.


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