PSA: Apple Mail on Mac May Stop Syncing Microsoft 365 Accounts Today
The cutoff has been on the cards for a fairly long time, as Microsoft stopped adding new features to EWS back in 2018, while in 2023 it announced that it would start disabling the protocol in Exchange Online from October 2026. As Microsoft explains in the blog post linked above, organizations that have chosen to keep EWS running aren't affected for now. As for everyone else, the cutoff may not happen all at once.
- ▪The cutoff has been on the cards for a fairly long time, as Microsoft stopped adding new features to EWS back in 2018, while in 2023 it announced that it would start disabling the protocol in Exchange Online from October 2026.
- ▪As Microsoft explains in the blog post linked above, organizations that have chosen to keep EWS running aren't affected for now.
- ▪As for everyone else, the cutoff may not happen all at once.
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| Original publisher | MacRumors |
| Canonical URL | https://www.macrumors.com/2026/10/01/apple-mail-mac-stop-sync-microsoft-365/ |
| Publication time | Thu, 01 Oct 2026 10:17:36 +0000 |
| Retrieval time | 2026-10-01T10:22:31.902Z |
| Last seen | 2026-10-01T10:22:31.902Z |
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Basis: Derived from the published RSS/Atom feed. Contact: [email protected]. Reviewed: 2026-07-24.
Opening excerpt (first ~120 words) tap to expand
PSA: Apple Mail on Mac May Stop Syncing Microsoft 365 Accounts TodayThursday October 1, 2026 3:17 am PDT by Tim HardwickMicrosoft today began disabling Exchange Web Services (EWS) by default in Exchange Online, which will cut off the protocol that Apple's Mail, Calendar, Contacts, Notes, and Reminders apps on Mac still rely on to sync Microsoft 365 work accounts. The cutoff has been on the cards for a fairly long time, as Microsoft stopped adding new features to EWS back in 2018, while in 2023 it announced that it would start disabling the protocol in Exchange Online from October 2026. As Microsoft explains in the blog post linked above, organizations that have chosen to keep EWS running aren't affected for now. As for everyone else, the cutoff may not happen all at once.
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Excerpt limited to ~120 words for fair-use compliance. The full article is at MacRumors.
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