A 401 Unauthorized error during PIN synchronization is resolved by confirming the PIN synchronization checkbox is enabled and the Unified CM application user has the AXL role.
Checked 2026-10-02
- Vendor
- Cisco
- Product
- Cisco Unity Connection
- Subsystem
- PIN synchronization
- Deployment
- on-premises
- Region
- not restricted
- Release range
- 11.5 and later
- Checked
- 2026-10-02
Sources
- How to Enable Common PIN for CUCM and UCXN — Cisco Systems · tier 2 current vendor documentation · section: Troubleshoot
Cite this note
APA
WarmTransfer. (2026, October 2). Troubleshooting Unity Connection voicemail login and PIN failures: source note unity-connection-login-troubleshooting-pin-sync-401-error. WarmTransfer. https://warmtransfer.net/knowledge/claims/unity-connection-login-troubleshooting-pin-sync-401-error
BibTeX
@misc{warmtransfer-claim-unity-connection-login-troubleshooting-pin-sync-401-error,
title = {Troubleshooting Unity Connection voicemail login and PIN failures: source note unity-connection-login-troubleshooting-pin-sync-401-error},
author = {{WarmTransfer}},
year = {2026},
url = {https://warmtransfer.net/knowledge/claims/unity-connection-login-troubleshooting-pin-sync-401-error},
note = {Source note unity-connection-login-troubleshooting-pin-sync-401-error, checked 2026-10-02}
}