Per FN74365, affected systems fail to synchronise voicemail with Exchange Online and the admin console reports 'Failed to Connect to Microsoft endpoint using https://outlook.office365.com'.
Checked 2026-10-02
Failed to Connect to Microsoft endpoint using https://outlook.office365.com
- Vendor
- Cisco
- Product
- Unity Connection
- Subsystem
- single inbox
- Deployment
- on-premises
- Region
- not restricted
- Release range
- 14 through 14SU6; 15 before 15SU4
- Checked
- 2026-10-02
Sources
- Field Notice: FN74365 - Cisco Unity Connection Unified Messaging with Microsoft 365 - Voicemail Stored in Cisco Unity Connection Will Not Sync with Exchange Online (Outlook) Due to EWS Deprecation - Software Upgrade Recommended — Cisco Systems · tier 2 current vendor documentation · FN74365 > Problem Symptom
Cite this note
APA
WarmTransfer. (2026, October 2). Troubleshooting Unity Connection voicemail-to-email and notifications: source note unity-connection-notification-troubleshooting-fn-ews-symptom. WarmTransfer. https://warmtransfer.net/knowledge/claims/unity-connection-notification-troubleshooting-fn-ews-symptom
BibTeX
@misc{warmtransfer-claim-unity-connection-notification-troubleshooting-fn-ews-symptom,
title = {Troubleshooting Unity Connection voicemail-to-email and notifications: source note unity-connection-notification-troubleshooting-fn-ews-symptom},
author = {{WarmTransfer}},
year = {2026},
url = {https://warmtransfer.net/knowledge/claims/unity-connection-notification-troubleshooting-fn-ews-symptom},
note = {Source note unity-connection-notification-troubleshooting-fn-ews-symptom, checked 2026-10-02}
}