Unified CM does not support mutual TLS for LDAP connections with Active Directory; if the LDAP server requests a client certificate during the TLS handshake, the connection attempt might fail.
Checked 2026-09-30
Cisco Unified Communications Manager does not support mutual TLS (mTLS) for LDAP connections with Active Directory.
- Vendor
- Cisco
- Product
- Unified Communications Manager
- Subsystem
- LDAP transport security
- Deployment
- on-premises
- Region
- not restricted
- Release range
- Release 15x; current as of 2026-09-30
- Checked
- 2026-09-30
Sources
- Compatibility Matrix for Cisco Unified Communications Manager and the IM and Presence Service, Release 15x — Cisco Systems · tier 2 current vendor documentation · section: Supported LDAP Directories, Note
Cite this note
APA
WarmTransfer. (2026, September 30). Setting up LDAP directory sync and authentication in Unified CM: source note cucm-ldap-sync-setup-no-mtls. WarmTransfer. https://warmtransfer.net/knowledge/claims/cucm-ldap-sync-setup-no-mtls
BibTeX
@misc{warmtransfer-claim-cucm-ldap-sync-setup-no-mtls,
title = {Setting up LDAP directory sync and authentication in Unified CM: source note cucm-ldap-sync-setup-no-mtls},
author = {{WarmTransfer}},
year = {2026},
url = {https://warmtransfer.net/knowledge/claims/cucm-ldap-sync-setup-no-mtls},
note = {Source note cucm-ldap-sync-setup-no-mtls, checked 2026-09-30}
}