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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