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How to prevent add-in downloads by turning off the Office Store across WEB outlook

Ammar 1 Reputation point
2022-02-10T16:15:50.927+00:00

Hi all - I was able to turn off the Office Store across all Office apps (desktop), including Outlook client. The article below explains the steps:

https://learn.microsoft.com/en-us/exchange/clients-and-mobile-in-exchange-online/add-ins-for-outlook/specify-who-can-install-and-manage-add-ins

However, I cannot find instructions on how to turn off Office Store across Outlook Web. While I can't access Office Store via the client, I am able to download and install add-ins via Outlook Web and I'd like to lock it down for my users.

Office Development
Office Development
Office: A suite of Microsoft productivity software that supports common business tasks, including word processing, email, presentations, and data management and analysis.Development: The process of researching, productizing, and refining new or existing technologies.
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Outlook Management
Outlook Management
Outlook: A family of Microsoft email and calendar products.Management: The act or process of organizing, handling, directing or controlling something.
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  1. Faery Fu-MSFT 19,596 Reputation points Microsoft External Staff
    2022-02-11T06:06:23.33+00:00

    Hi @Ammar ,
    Welcome to our forum!
    According o my search, you can change the default role assignment policy to achieve your requirement. see the steps below:

    1.Log in to EAC (exchange admin center) with an admin account.

    2.Click permissions > user roles > double-click the default role assignment policy > uncheck My Custom Apps、My MarketPlace Apps and My ReadWriteMailbox Apps option as the picture below:
    173249-eac.png

    3.click save. then the end users shouldn’t have the ability to turn on additional add-ins as long as they haven't been assigned other role policies.

    Please feel free to let us know if there is any update on this thread.

    If the answer is helpful, please click "Accept Answer" and kindly upvote it. If you have extra questions about this answer, please click "Comment".
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  2. Ammar 1 Reputation point
    2022-02-11T18:48:20.717+00:00

    Thank you, @Faery Fu-MSFT !

    1. Will this change impact existing Add-ins deployed like Zoom add-ins, etc. that are currently in use?
    2. how can I enable new add-ins in the future as needed by the business? i.e. enable 1 or 2 add-ins vs all add-ins

    I only have one policy like shown in the screenshot above, Default Role Assignment Policy.

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  3. Faery Fu-MSFT 19,596 Reputation points Microsoft External Staff
    2022-02-14T10:13:35.347+00:00

    Hi @Ammar ,

    I only have one policy like shown in the screenshot above, Default Role Assignment Policy.

    Could you please provide a detailed screenshot? Have you try to double-click the Default Role Assignment Policy?
    According to my test, when I unchck the three options, and the add-in in office-store is limited to install, and the original add-ins work nomal.

    173980-three.png
    If you need further help, please provide more detailed information, so that we can give more appropriate suggestions.

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