Is your code ready for the EWS shutdown?

Microsoft is retiring Exchange Web Services (EWS) for Exchange Online, with shutdown starting in October 2026. Apps that still call EWS must migrate to the Microsoft Graph API. EWScan scans your source code in your browser — nothing is uploaded — and maps every EWS namespace, client, endpoint and operation to its Microsoft Graph replacement.

EWS to Microsoft Graph migration — FAQ

Is EWS being deprecated?

Yes. Exchange Online is retiring EWS, with the shutdown beginning October 2026. Applications using EWS must migrate to Microsoft Graph.

What replaces EWS?

Microsoft Graph — mail, calendar, contacts, folders and change notifications via the Graph REST API with OAuth2 (MSAL).

How do I find EWS usage in my code?

Upload your project as a .zip to EWScan. It scans .NET, Java, Python and PowerShell for EWS patterns and lists each file and line with the Graph equivalent.

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