Configure and update file handlers in Office 365

Applies to: Office 365

App manifest and the addIns property

The Application entity in the Azure active directory (AD) contains a new property, addIns, to support file handlers. The addIns property itemizes the file handlers contained in an app, and the associated properties. These details are used to configure a file handler for an extension with Office 365, specifying the new file, open and preview behavior for that extension.

The manifest syntax is:

    "addIns": [
            "id": "unique guid",
            "type": "FileHandler",
            "properties": [
                    "key": "extension",
                    "value": "List of file extensions separated by semicolons"
                    "key": "fileIcon",
                    "value": "URL of icon for the file type"
                    "key": "newFileUrl",
                    "value": "URL for the new file function"
                    "key": "openUrl",
                    "value": "URL for the file open function"
                    "key": "previewUrl",
                    "value": "URL for the file preview function"


The property keys are case sensitive.

The schema is described in the following table.

Member Description Data type Parent Child members
addIns Root element; contains an array of objects defining file handlers in the application. array none type
id Identifies an individual add-in within the add-ins collection; you can use a GUID generating tool to generate the value. GUID addIns none
type The add-in type. For file handlers, value is "FileHandler". string addIns none
properties Defines the file handler properties object addIns extension
extension The file handler extension without a leading "." character; for example, "psd". Multiple file extensions, separated by semicolon, can be specified. string properties none
fileIcon URL for the icon representing the file type; for example, "". Protocol must be https and can be any image format that will render in an HTML page. The image will automatically resize and the recommended dimension for image is 32x32 pixels. string properties none
newFileUrl URL for the new file function; for example, "". Protocol must be https. string properties none
previewUrl URL for the preview function; for example, "". Protocol must be https. string properties none
openUrl URL for the function that opens the file for editing; for example, "". Protocol must be https. string properties none

To configure a file handler, you need to add the file handler details via the addIns property to the app manifest in Azure AD. There is currently no UI in the Azure management portal to do this, so you need to do this using Azure AD Graph API queries.

With the first query, you need to retrieve the objectId for the application. To do this, you use a GET request with the appId as a filter parameter for the query.


The objectId and appId are both GUIDs that identify the application, but they are not the same value.

You can find the appId, also known as the Client ID, in the configuration page for your app in the Azure Management portal, in the Client ID property. You can also find it in ClientID key of the appSettings section of the web.config for your application.

To retrieve the objectId, send the following GET request to the Azure AD Graph.


Replace with your tenant domain and appId with the Client ID value. This query will return the application object, which contains the objectId property.

Now you're ready to construct the query to update the file handler configuration, as follows:


Replace with your tenant domain and objectId with the objectId value you retrieved with the first query. Set the content type to application/json, and pass the json specifying the file handler configuration details in the request body.


The addIns property is part of the Azure AD Graph 1.6 schema, so you need to specify 1.6 for the api-version parameters, as shown in the preceding examples.

For more information, see Azure AD Graph API Versioning.


After updating the application configuration, your changes won’t be visible if you download the manifest file.

AddIns Manager sample tool

You can use the AddIns Manager sample tool to make the Azure AD Graph queries to configure and update a file handler once you have registered the file handler application with Azure AD. Using the AddIns Manager tool will update the app configuration in Azure AD.


The AddIns Manager sample tool is for demonstration and testing purposes only, and should not be used in production environments.

To use the AddIns Manager tool to configure a file handler

  1. Navigate to AddIns Manager sample tool.
  2. When the page loads in the browser, click Sign in in the top right side of the page.
  3. Enter the credentials for the tenant admin, and click sign in.
  4. Select the name of your file handler app in My Applications in the left navbar.
  5. Click Register Add-In.
  6. In the Register Add-In dialog, select File Handler.
  7. Click the drop-down for File Handler Add-In.
  8. Enter the details for your file handler. The protocol must be https.
  9. Click Update Add-In.

If the file handler was configured successfully, you will see a message box confirming the successful update.