Microsoft Decommissioning Support for Application Impersonation in Exchange Online

Microsoft will begin blocking the assignment of the Application Impersonation role in Exchange Online starting September 2024 and in February 2025 removing this role and its feature set from Exchange Online.

This removal will impact any existing configurations or workflows that rely on Application Impersonation, necessitating a transition to alternative methods or roles to maintain functionality. Organizations using this role will need to plan and implement changes to their systems to ensure continued operation without disruption.

• Microsoft Tech Community article: Retirement of RBAC Application Impersonation in Exchange Online | Microsoft Community Hub
  
  

What it Means for iManage environments:

For our iManage environments, this will affect your Communication Server if you are using the User credential configuration OAuth2. If you are depending on the Communication Server to file your email with the User credential settings, it will fail at this time. This means that any automated processes or workflows that depend on this configuration will no longer function as expected, potentially leading to disruptions in your email management and filing systems. It is crucial to assess your current setup and prepare for these changes to avoid any interruptions in service.

• iManage Advisory: ADVISORY: Action required to preserve iManage Work Communications Server for Exchange's connection to Microsoft Office 365 – iManage Help Center
  
  

Action Needed:

If you have not moved from the Communication Server to client-side filing, you can change your configuration to utilize the App Credential authentication.

• iManage Technote: Configuring iManage Work Communications Server for Exchange to use OAuth2 App Credential authorization – iManage Help Center
  
  

If you would like more information or require any assistance regarding these changes, please reach out to our team of experts at service@helient.com. They are available to provide guidance, answer any questions you may have, and help you navigate through the transition process smoothly.