Changes to Exchange Online APIs and how they affect Cayosoft Administrator

Summary: This article describes the recent and upcoming changes Microsoft is making to its APIs and how this change is reflected inCayosoft Administrator.

Applies to: Cayosoft Administrator 10.1 or later.

IMPORTANT: Microsoft has announced deprecation of the previous APIs on June 2023.Cayosoft Administrator versions prior to 10.1 will no longer work with Exchange Online after this happens. Please upgrade to 10.1 or above version before June 2023.

Overview

Exchange Online PowerShell is the application interface used by Cayosoft Administrator to connect to Exchange Online to perform related administrative tasks. Over the past year, Microsoft has rolled out major changes to this interface in order to improve the security and performance. These changes have required significant changes to the way Cayosoft Administrator works with Exchange Online that may have an effect on certain operations. This article goes over some of the details around the changes Microsoft has implemented and how Cayosoft Administrator has integrated these changes.

Exchange PowerShell V2 and V3

Version 2.0.5 and earlier is described in Microsoft's documentation as the Exchange Online.

PowerShell V2 module (abbreviated as the EXO V2 module). Version 3.0.0, released September 2022 and later is known as the Exchange Online PowerShell V3 module (abbreviated as the EXO V3 module).

Among many other changes, V3 now supports cmdlets backed by the REST API instead of the legacy WinRM API. REST-backed cmdlets offer significant performance and security improvements over their legacy counterparts, as shown in the table below::

See this article from Microsoft for details.

Legacy commands deprecation

Microsoft has announced deprecation of Remote PowerShell Protocol for Exchange Online on June 2023. After this time, the legacy commands and Cayosoft Administrator version prior to 10.1 will stop functioning. For details, see the announcement here.

IMPORTANT: If you have an issue when using the new commands, please do not switch back to using legacy commands unless you have contacted Cayosoft support first. It is fine to use the legacy mode the time it takes to resolve the issue, but it is important we are made aware of any such possible compatibility issues and fix them before the June 2023 deadline.