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Dissabling user's ability to add non-manged Add-Ins in Outlook(0365) RRS feed

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    Hi JBwana,

    Regarding the missing link after "See", I noticed that a similar feedback has been submitted via the Feedback section under the page: this section is incomplete and the article is misleading. It's encouraged to adding your comments there and tracking the status of the post.

    When it comes to preventing users from installing non-admin approved add-ins in Outlook, I tested in my lab by removing all the three user roles mentioned in this link, but got the same result as yours that the end-users can still install add-ins in Outlook.

    From the discussion under the link below, it may take up to 24 hours for the change to take effect:

    Only allow admin managed addins

    So please wait for some time and have a test again to see if it works. I will also check it again tomorrow in my side and keep you posted with any update. 


    This Microsoft Online: Exchange Online Forum will be migrating to a new home on Microsoft Q&A, please refer to this sticky post for more details.

    Regards,

    Yuki Sun

    Microsoft Online: Exchange Online will be migrating to a new home on Microsoft Q&A! We invite you to post new questions in the new forum.

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    Wednesday, July 22, 2020 6:11 AM
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    Thanks Yuki. Its been over 24 hrs, and nothing has changed. How did your test go?
    Wednesday, July 22, 2020 9:30 PM
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    Thanks Yuki. Its been over 24 hrs, and nothing has changed. How did your test go?

    Hello JBwana,

    Waited up to 24 hours and still no change from my side either. From the discussion in this thread which has been mentioned earlier, it seems that we are not the only users experiencing this. 

    Given this, considering that in most cases users may attempt to install add-ins via the Office Store, personally I'd recommend hiding the "Get Add-ins" button in Outlook clients via registry to prevent users from getting add-ins via Office Store. 

    Important: Follow the steps in this section carefully. Serious problems might occur if you modify the registry incorrectly. Before you modify it, back up the registry for restoration in case problems occur.

    Command line to add the registry:

    reg add HKEY_CURRENT_USER\Software\Microsoft\Office\16.0\Outlook\Options\Webext /v StoreButtonInRibbonHomeTabAllowed /t reg_dword /d 0 /f

    I tested in my lab and it can successfully hide the Get Add-ins button in my Outlook for Microsoft 365 Apps. 

    For more details with steps to deploy the registry via GPO, you may refer to the article below:

    SOLVED: How To Disable GET ADD-INS Button in Outlook
    (Please Note: Since the web site is not hosted by Microsoft, the link may change without notice. Microsoft does not guarantee the accuracy of this information.)

    This Microsoft Online: Exchange Online Forum will be migrating to a new home on Microsoft Q&A, please refer to this sticky post for more details.

    Regards,

    Yuki Sun

    Microsoft Online: Exchange Online will be migrating to a new home on Microsoft Q&A! We invite you to post new questions in the new forum.

    For more information, please refer to the sticky post.


    Thursday, July 23, 2020 7:32 AM
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    Thanks again. I had looked at the registry options, but since the Get-Add in button is totally removed, is it possible for users to install managed add-ins? How will the deployment of add-ins work?

    Thanks for putting effort on this.

    Thursday, July 23, 2020 2:40 PM
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    Hi JBwana,

    If the "Get Add-ins" button is removed, users will be prevented from manually controlling the add-ins in Outlook. You would need to install/remove add-ins for Outlook for users in your organization via EAC > Organization > Add-ins or using EMS. For more information, you may refer to: 
    Install or remove add-ins for Outlook for your Exchange 2013 organization.
    Manage user access to add-ins for Outlook in Exchange 2013
    (These links are intended for Exchange 2013, but based on my test, they can be applied to Exchange Online as well.)  

    If your end users have installed add-ins on their own, you can use the Get-App cmdlet to see which add-ins each user has installed, and then use the Remove-App cmdlet to remove any add-ins from one or more users. 

    By the way, as regards to the missing link after "See" mentioned previously, after comparing with this link for Exchange 2013, it seems to me that the missing link is: Manage role groups in Exchange Online.

    This Microsoft Online: Exchange Online Forum will be migrating to a new home on Microsoft Q&A, please refer to this sticky post for more details.

    Regards,

    Yuki Sun

    Microsoft Online: Exchange Online will be migrating to a new home on Microsoft Q&A! We invite you to post new questions in the new forum.

    For more information, please refer to the sticky post.

    Friday, July 24, 2020 9:41 AM
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    Hi JBwana,

    I am writing to see how everything is going on with this thread. If the information above was helpful, do you mind helping mark it as answer? This can be beneficial to others who read this thread. If you still have further concern on this, please feel free to post back.

    This Microsoft Online: Exchange Online Forum will be migrating to a new home on Microsoft Q&A, please refer to this sticky post for more details.

    Regards,

    Yuki Sun

    Microsoft Online: Exchange Online will be migrating to a new home on Microsoft Q&A! We invite you to post new questions in the new forum.

    For more information, please refer to the sticky post.

    Monday, August 3, 2020 7:30 AM