EvtMbxOAuthHttpStatusCode 401 in CiscoSysLog means the Application ID, Client ID and Client Secret values on the unified messaging service should be verified.
Checked 2026-10-02
- Vendor
- Cisco
- Product
- Unity Connection
- Subsystem
- single inbox OAuth
- Deployment
- on-premises
- Region
- not restricted
- Release range
- Release 15
- Checked
- 2026-10-02
Sources
- Troubleshooting Guide for Cisco Unity Connection Release 15 - Troubleshooting Unified Messaging — Cisco Systems · tier 2 current vendor documentation · Troubleshooting Unified Messaging > OAuth2 events in CiscoSysLog
Cite this note
APA
WarmTransfer. (2026, October 2). Troubleshooting Unity Connection voicemail-to-email and notifications: source note unity-connection-notification-troubleshooting-oauth-evt-401. WarmTransfer. https://warmtransfer.net/knowledge/claims/unity-connection-notification-troubleshooting-oauth-evt-401
BibTeX
@misc{warmtransfer-claim-unity-connection-notification-troubleshooting-oauth-evt-401,
title = {Troubleshooting Unity Connection voicemail-to-email and notifications: source note unity-connection-notification-troubleshooting-oauth-evt-401},
author = {{WarmTransfer}},
year = {2026},
url = {https://warmtransfer.net/knowledge/claims/unity-connection-notification-troubleshooting-oauth-evt-401},
note = {Source note unity-connection-notification-troubleshooting-oauth-evt-401, checked 2026-10-02}
}