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How does disabling Add Ins effect existing setups?

Justin Benjamin 0 Reputation points
2025-04-16T15:47:45.1+00:00

We are looking at turning off My Custom Apps, My Marketplace Apps, and My ReadWriteMailbox Apps in the Default User Role but are curious how this will affect users who have already deployed add ins on their own? Do they become non-functional? Or will this only effect users who attempt to use add ins moving forward?

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Microsoft Exchange Online Management
Microsoft Exchange Online Management
Microsoft Exchange Online: A Microsoft email and calendaring hosted service.Management: The act or process of organizing, handling, directing or controlling something.
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  1. Hien-L 1,060 Reputation points Microsoft External Staff
    2025-04-17T10:51:01.3666667+00:00

    Hi Justin Benjamin,

    Thank you for posting your question in the Microsoft Q&A forum.

    In general, My Custom Apps, My Marketplace Apps, and My ReadWriteMailbox Apps these roles only enable user to install and manage some specific add-ins. For some add-ins that already have been installed, they should work normally. However, end users cannot continue to manage these existing add-ins, and cannot install or manage other new add-ins.

    You can check this article for reference:

    Specify the administrators and users who can install and manage add-ins for Outlook in Exchange Online | Microsoft Learn 

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