outlookoffice-jsoutlook-addinoutlook-web-addinsoutlook-restapi
Outlook Add-in REST API deprecation
We are retrieving the email and attachments using the oAuth token from getCallbackTokenAsync in office.js JavaScript library and sending the token to the web application to retrieve them from EWS (~/EWS/Exchange.asmx) using SOAP request similar to the approach shown in https://learn.microsoft.com/en-us/office/dev/add-ins/outlook/get-attachments-of-an-outlook-item
- Could anyone please confirm that the deprecation of Outlook Rest API 2.0 will not affect the existing functionality. I am new to the Outlook add-in development and the documentation seems vast to digest.
https://devblogs.microsoft.com/microsoft365dev/outlook-rest-api-v2-0-deprecation-notice/
- Do we need to register the add-in anywhere OR provide any permissions to the add-in specifically for
getCallbackTokenAsyncmethod to retrieve the token OR making the SOAP request to download attachments.
Solution
EWS remains unchanged for Outlook web add-ins. Make sure that you don't use the isRest option for the getCallbackTokenAsync call.
Take a look at the recent Office add-ins community call where this question was discussed in depth. Here is a screenshot for others:
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