Forum Discussion

cstest cstest's avatar
cstest cstest
Copper Contributor
Jan 30, 2020

Microsoft Graph API support for on premise Exchange

Hi, Would like to know whether Microsoft Graph APIs support on premise Exchange. Thanks.   Best regards Pavan
exchange online
Exchange Server
hybrid
Alexander_Stromer's avatar
Alexander_Stromer
Copper Contributor
Oct 05, 2023

EWS online will be retired with Oct 2026, so the golden rule today (Oct 2023) is:

1. use EWS for on-premise Exchange

2. use Microsoft Graph for Exchange Online

kguelzau's avatar
kguelzau
Copper Contributor
Jan 21, 2025

And since MS also retired the EWS Client Libs https://github.com/OfficeDev/ews-java-api / https://github.com/OfficeDev/ews-managed-api you are forced to create your own clients for the on-prem EWS API.