Office Settings & Configuration

How to Manage User-Installed Office Store Add-ins in Microsoft 365

Olivia Miller Sep 30, 2026 869 views

Question details

Administrators need to inventory, disable, remove, or block modern web-based Office add-ins that individual users have installed directly from the Office Store.

How to Manage User-Installed Office Store Add-ins in Microsoft 365

Product: Microsoft 365
Device & OS: not provided
Scenario: Managing user-owned apps and services within a Microsoft 365 tenant environment.
Observed behavior: The Microsoft 365 admin center lacks a complete built-in inventory for user-installed web-based add-ins, making centralized removal and tracking challenging for administrators.

Before you start

Ensure you are logged into the Microsoft 365 Admin Center with Global Administrator or Exchange Administrator privileges before attempting to modify organizational app settings.

Solution 1Recommended

Disable the Office Store in Org Settings

Prevent users from downloading and installing new web-based add-ins by turning off Office Store access at the tenant level.

By disabling user access to the Office Store, you can prevent future installations of unapproved third-party add-ins across all Office applications, including Office for the web.

Access the Microsoft 365 Admin Center

Navigate to the Microsoft 365 Admin Center and log in using your administrator credentials.

Navigate to Org Settings

In the left-hand navigation pane, expand 'Settings' and click on 'Org settings'.

Modify User-Owned Apps Settings

Locate and click on 'User-owned apps and services'. Find the option related to the Office Store and toggle it to disable user access.

Disable the Office Store in Org Settings

Impact on Existing Add-ins: This setting prevents new installations. Add-ins that users have already installed prior to this change may remain active and require manual removal.

Solution 2

Instruct Users to Remove Add-ins Manually

Because the admin center cannot centrally remove add-ins installed individually by users, they must be uninstalled locally from the Office applications.

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Frequently Asked Questions

Can I view a complete inventory of all add-ins installed by users in Microsoft 365?

Currently, the Microsoft 365 admin center does not provide a comprehensive built-in report for all modern web-based add-ins installed individually by users. Administrators can only centrally manage and track add-ins deployed via the Integrated Apps section.

Why can't I remove an add-in for a specific user from the admin center?

The centralized removal process in the admin center only applies to add-ins that were deployed by administrators. Add-ins installed locally by users from the Office Store must be removed by the users themselves.

Does disabling the Office Store affect existing add-ins?

Disabling the Office Store prevents users from acquiring and installing new add-ins. However, add-ins previously installed by users may continue to function and typically require manual removal.

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