MC676299 – Retirement of Exchange Web Services in Exchange Online

Admin impact, Exchange Online, Major update, Retirement

check before: 2023-10-06

Product:

Exchange, Microsoft 365 Apps, Microsoft Graph, Outlook, Teams

Platform:

Developer, Mac, Online, Web, World tenant

Status:

Change type:

Admin impact, Retirement

Links:

Details:

In 2018, we announced that we were no longer making feature updates to Exchange Web Services (EWS) in Exchange Online, and we advised developers to move to Microsoft Graph.
Today, we are announcing that on October 1, 2026, we will start blocking EWS requests from non-Microsoft apps to Exchange Online.
[When this will happen:]
October 1, 2026

Change Category:
XXXXXXX ...

Scope:
XXXXXXX ...

Release Phase:

Created:
2023-09-22

updated:
2023-09-22

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MC676299 – Retirement of Exchange Web Services in Exchange Online

check before: 2023-10-06

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