Cisco says LDAP over SSL problems usually come from invalid, wrong or incomplete certificate chains on Unified CM, and recommends uploading the root and intermediate certificates but not the leaf.
Checked 2026-10-02
In most cases, problems with LDAP over SSL involve invalid, wrong, or incomplete certificates (chains) on the Unified Communications Manager server.
- Vendor
- Cisco
- Product
- Cisco Unified Communications Manager
- Subsystem
- LDAPS certificate validation
- Deployment
- on-premises
- Region
- not restricted
- Release range
- 12.5(1) troubleshooting guide
- Checked
- 2026-10-02
Sources
- Troubleshooting Guide for Cisco Unified Communications Manager, Release 12.5(1) - Cisco Unified Communications Manager System Issues — Cisco Systems · tier 2 current vendor documentation · Issues with LDAP Over SSL
Cite this note
APA
WarmTransfer. (2026, October 2). Troubleshooting LDAP directory sync failures in Unified CM: source note cucm-ldap-sync-troubleshooting-ldaps-cert-chain. WarmTransfer. https://warmtransfer.net/knowledge/claims/cucm-ldap-sync-troubleshooting-ldaps-cert-chain
BibTeX
@misc{warmtransfer-claim-cucm-ldap-sync-troubleshooting-ldaps-cert-chain,
title = {Troubleshooting LDAP directory sync failures in Unified CM: source note cucm-ldap-sync-troubleshooting-ldaps-cert-chain},
author = {{WarmTransfer}},
year = {2026},
url = {https://warmtransfer.net/knowledge/claims/cucm-ldap-sync-troubleshooting-ldaps-cert-chain},
note = {Source note cucm-ldap-sync-troubleshooting-ldaps-cert-chain, checked 2026-10-02}
}