Update 1/20/2022: We have edited this post for clarity based on customer feedback.
Over the last few years, we have invested heavily in Microsoft Graph to enable developers to access the rich data ...
Updated Jan 20, 2022
Version 5.0
Blog Post
Greg Taylor - EXCHANGE
Microsoft
MicrosoftIan_M10 and MichelZCF and others. We've updated the plan - We will not block these APIs when we get to March 31, 2022. They can still be used, but are deprecated/not supported, for the time being.
Today we are announcing the deprecation of the 25 least used APIs of EWS for Exchange Online (as determined by the call volume into the service). We are deprecating these APIs to begin the process of reducing the surface area of the EWS protocol for maintenance and security purposes. Support for these APIs will no longer exist after March 31, 2022.
The list of deprecated APIs is at the end of this post. We will introduce sunset headers in the response for these APIs that are marked for deprecation.