Source note · Troubleshooting Expressway Mobile and Remote Access
Secure MRA registrations fail with 'Failed to establish SSL connection' when the Expressway-C server certificate SAN lacks the Unified CM phone security profile names; from X12.6 those profile names must be in FQDN format.
Checked 2026-10-01
- Vendor
- Cisco
- Product
- Cisco Expressway
- Subsystem
- certificates
- Deployment
- on-premises
- Region
- not restricted
- Release range
- X12.6 and later per X15.2 documentation
- Checked
- 2026-10-01
Sources
- Mobile and Remote Access Through Cisco Expressway Deployment Guide (X15.2) - MRA Troubleshooting — Cisco Systems · tier 2 current vendor documentation · Registration Issues > Endpoints Cannot Register to Unified CM (secure registrations)
Cite this note
APA
WarmTransfer. (2026, October 1). Troubleshooting Expressway Mobile and Remote Access: source note expressway-mra-troubleshooting-secure-profile-san-fqdn. WarmTransfer. https://warmtransfer.net/knowledge/claims/expressway-mra-troubleshooting-secure-profile-san-fqdn
BibTeX
@misc{warmtransfer-claim-expressway-mra-troubleshooting-secure-profile-san-fqdn,
title = {Troubleshooting Expressway Mobile and Remote Access: source note expressway-mra-troubleshooting-secure-profile-san-fqdn},
author = {{WarmTransfer}},
year = {2026},
url = {https://warmtransfer.net/knowledge/claims/expressway-mra-troubleshooting-secure-profile-san-fqdn},
note = {Source note expressway-mra-troubleshooting-secure-profile-san-fqdn, checked 2026-10-01}
}