After the upgrade to 15SU4 or later converts an Office 365 unified messaging service from EWS to Graph API, the service may need up to 4 hours to become fully stable.
Checked 2026-10-02
the Unified Messaging Service (UMS) may require up to 4 hours to achieve full stability and operational readiness.
- Vendor
- Cisco
- Product
- Unity Connection
- Subsystem
- single inbox Graph API
- Deployment
- on-premises
- Region
- not restricted
- Release range
- 15SU4 and later
- Checked
- 2026-10-02
Sources
- Unified Messaging Guide for Cisco Unity Connection Release 15 - Configuring Unified Messaging — Cisco Systems · tier 2 current vendor documentation · Configuring Unified Messaging > Office 365 with Microsoft Graph API > upgrade note
Cite this note
APA
WarmTransfer. (2026, October 2). Troubleshooting Unity Connection voicemail-to-email and notifications: source note unity-connection-notification-troubleshooting-graph-4h-stable. WarmTransfer. https://warmtransfer.net/knowledge/claims/unity-connection-notification-troubleshooting-graph-4h-stable
BibTeX
@misc{warmtransfer-claim-unity-connection-notification-troubleshooting-graph-4h-stable,
title = {Troubleshooting Unity Connection voicemail-to-email and notifications: source note unity-connection-notification-troubleshooting-graph-4h-stable},
author = {{WarmTransfer}},
year = {2026},
url = {https://warmtransfer.net/knowledge/claims/unity-connection-notification-troubleshooting-graph-4h-stable},
note = {Source note unity-connection-notification-troubleshooting-graph-4h-stable, checked 2026-10-02}
}