Cisco and the EWS retirement
Microsoft Graph migration status from Cisco's own notices. Last checked 2026-10-22.
Cisco Unified Communications Manager IM and Presence Service (Office 365 calendaring)
- Status
- Moved to Microsoft Graph
- Date
- 2026-03-17
“Cisco Unified Communications Manager IM and Presence Service migrates from Exchange Web Services (EWS) to Microsoft Graph APIs for Office 365 integration.”
Release Notes for Cisco Unified Communications Manager Release 15SU4a and the IM and Presence Service Release 15SU4 - Cisco (2026-03-17), read 2026-10-22.
What to do. From Release 15SU4, IM and Presence reads Office 365 calendars over Microsoft Graph for In a Meeting and Out of Office presence. The upgrade changes standard commercial and U.S. Government EWS endpoint URLs to Graph URLs. Integration with on-premises Exchange keeps using EWS.
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Application IDs
This site lists no fixed application ID for Cisco. Look up an ID from your EWS usage report on the home page, or find the name behind it in Entra, under Enterprise applications.
Every app in your tenant
The tenant plan reads your EWS usage report in your browser and matches each app against these statuses and your current allow list. All vendor statuses.