List Investigations API

Applies to:

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If you are a US Government customer, please use the URIs listed in Microsoft Defender for Endpoint for US Government customers.


For better performance, you can use server closer to your geo location:


API description

Retrieves a collection of Investigations.

Supports OData V4 queries.

The OData's $filter query is supported on: startTime, id, state, machineId and triggeringAlertId properties.
$stop with max value of 10,000

See examples at OData queries with Microsoft Defender for Endpoint


  1. Maximum page size is 10,000.
  2. Rate limitations for this API are 100 calls per minute and 1500 calls per hour.


One of the following permissions is required to call this API. To learn more, including how to choose permissions, see Use Microsoft Defender for Endpoint APIs

Permission type Permission Permission display name
Application Alert.Read.All 'Read all alerts'
Application Alert.ReadWrite.All 'Read and write all alerts'
Delegated (work or school account) Alert.Read 'Read alerts'
Delegated (work or school account) Alert.ReadWrite 'Read and write alerts'


When obtaining a token using user credentials:

  • The user needs to have at least the following role permission: 'View Data' (See Create and manage roles for more information)

HTTP request


Request headers

Name Type Description
Authorization String Bearer {token}. Required.

Request body



If successful, this method returns 200, Ok response code with a collection of Investigations entities.


Request example

Here is an example of a request to get all investigations:


Response example

Here is an example of the response:

    "@odata.context": "$metadata#Investigations",
    "value": [
            "id": "63017",
            "startTime": "2020-01-06T14:11:34Z",
            "endTime": null,
            "state": "Running",
            "cancelledBy": null,
            "statusDetails": null,
            "machineId": "a69a22debe5f274d8765ea3c368d00762e057b30",
            "computerDnsName": "desktop-gtrcon0",
            "triggeringAlertId": "da637139166940871892_-598649278"


Do you want to learn more? Engage with the Microsoft Security community in our Tech Community: Microsoft Defender for Endpoint Tech Community.