CiraSync and the EWS retirement
Microsoft Graph migration status from CiraSync's own notices. Last checked 2026-10-25.
CiraSync Cloud (Public Folder sync tunnels)
- Status
- Retired
- Date
- 2026-07-08
- Vendor notice
- https://cirasync.com/blog-articles/ews-deprecation-public-folder-migration-cirasync/
“applications like CiraSync Cloud will no longer be able to read or sync data that resides directly in Public Folders.”
An Important Update for Customers Using Public Folders in Exchange Online (2026-07-08), read 2026-10-25.
What to do. CiraSync Cloud can no longer read Exchange Online Public Folders once EWS is off, so Public Folder sync tunnels stop. CiraSync Support migrates the Public Folder contacts and calendars into a shared or user mailbox, which syncs through Microsoft Graph, and repoints the tunnel; the customer contacts support with the mailbox and folder name.
One email from ewsappid.com each time a status on this page changes, nothing else, and none after 1 April 2027. Every alert has an unsubscribe link; one press deletes your address, or write to support@ewsappid.com at any time. Sender details are on the contact page; see the privacy policy.
Application IDs
This site lists no fixed application ID for CiraSync. 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.