How to Disable EWS Throttling in Exchange Online

The EWS API now has been replaced with the Microsoft Graph API.
Microsoft is retiring Exchange Web Services (EWS) in Exchange Online as part of its move toward modern APIs such as Microsoft Graph.

Refer to EWS Deprecation article for details on required actions.

As of Microsoft's current retirement roadmap, EWS disablement for Exchange Online begins in October 2026, with full retirement scheduled for April 2027.