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Important Notice for Exchange Sync Users: Upcoming Upgrade Requirement [by October 2026]

  • November 24, 2025
  • 1 reply
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T
Acumatica Moderator
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Greetings, Community Members. We want to inform you that we are actively developing updates for Acumatica’s Exchange Sync software in response to upcoming changes Microsoft has scheduled for Fall 2026. Our goal is to ensure continued compatibility and a seamless experience for our customers.

 

This change is driven by a Microsoft deprecation of legacy components that Exchange Sync relies on. Microsoft now requires migration to newer versions of their software, and Acumatica version 26R1 is being specifically designed to align with these updated requirements.  We are also actively evaluating options to support this change in a prior release of Acumatica. We expect to share more detailed information within the next couple of weeks.

 

Rest assured, we will continue to provide regular updates and support resources as the Microsoft deadline approaches. If you have any questions or need assistance with your upgrade planning, please don’t hesitate to reach out.

 

The Acumatica CRM Team

 

Happy CRM'ing! -Tara (Acumatica Technical PM-CRM)

    1 reply

    T
    Acumatica Moderator
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    • Tara H
    • Author
    • Acumatica Moderator
    • March 17, 2026

    Thank you all for your patience as we work through these upcoming Microsoft changes together.  I’m pleased to let you know that this Exchange Sync fix is included in both 25R2 Service Pack 2, and the forthcoming 26R1 version of Acumatica.

    I also want to share an important clarification that may help with your planning: although Microsoft is deprecating the legacy EWS components that Exchange Sync relies on, they have indicated that administrators will be able to temporarily turn EWS back on for their tenants during the transition period. Full deprecation is currently planned for early 2027. 

    Please see the following Microsoft articles for specific technical clarifications as it pertains to your Microsoft environment:  Exchange Online EWS, Your Time is Almost Up | Microsoft Community Hub , Control access to EWS in Exchange | Microsoft Learn (last one is for Microsoft Admins).

     If you have any questions, please feel free to reach out.

    Happy CRM'ing! -Tara (Acumatica Technical PM-CRM)
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