Synology and the EWS retirement

Microsoft Graph migration status from Synology's own notices. Last checked 2026-10-15.

Active Backup for Microsoft 365

Status
Migration announced
Date
2026-08-20
Vendor notice
https://kb.synology.com/en-us/APM/tutorial/Troubleshooting_EWS_migration
“Active Backup for Microsoft 365 has migrated Personal Mail, Personal Calendar, and Contacts to the Microsoft Graph API.”

Active Backup for Microsoft 365 Release Notes (Synology release notes API) (2026-08-20), read 2026-10-15.

What to do. Version 3.0.0 (20 August 2026) moved personal mail, calendar and contacts backup to Graph. Archived mail, group mail, group calendars and China-region tenants still use EWS, so keep each backup task's app ID on EwsAllowedAppIDs. Mail restores now use Graph and need MailboxItem.ImportExport.All. Synology may drop the EWS-only services if Graph never supports them.

Get an email when Synology's status changes

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

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.