windows-itpro-docs/windows/security/threat-protection/microsoft-defender-atp/get-machine-log-on-users.md

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Get machine log on users API	Retrieves a collection of logged on users.	apis, graph api, supported apis, get, machine, log on, users	eADQiWindows 10XVcnh	w10	deploy	library	security	macapara	mjcaparas	medium	dansimp	ITPro	M365-security-compliance	article

Get machine log on users API

Applies to: Microsoft Defender Advanced Threat Protection (Microsoft Defender ATP)

• Want to experience Microsoft Defender ATP? Sign up for a free trial.

API description

Retrieves a collection of logged on users on a specific machine.

Limitations

1. You can query on machines last seen in the past 30 days.
2. Rate limitations for this API are 100 calls per minute and 1500 calls per hour.

Permissions

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

Permission type	Permission	Permission display name
Application	User.Read.All	'Read user profiles'
Delegated (work or school account)	User.Read.All	'Read user profiles'

Note

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)
• Response will include users only if the machine is visible to the user, based on machine group settings (See Create and manage machine groups for more information)

HTTP request

GET /api/machines/{id}/logonusers

Request headers

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

Request body

Empty

Response

If successful and machine exist - 200 OK with list of user entities in the body. If machine was not found - 404 Not Found.

Example

Request

Here is an example of the request.

[!includeImprove request performance]

GET https://api.securitycenter.windows.com/api/1e5bc9d7e413ddd7902c2932e418702b84d0cc07/logonusers

Response

Here is an example of the response.

HTTP/1.1 200 OK
Content-type: application/json
{
    "@odata.context": "https://api.securitycenter.windows.com/api/$metadata#Users",
    "value": [
        {
            "id": "contoso\\user1",
            "accountName": "user1",
            "accountDomain": "contoso",
            "accountSid": "S-1-5-21-72051607-1745760036-109187956-93922",
            "firstSeen": "2019-12-18T08:02:54Z",
            "lastSeen": "2020-01-06T08:01:48Z",
            "mostPrevalentMachineId": "111153d0c675eaa415b8e5f383c6388bff446c62",
            "leastPrevalentMachineId": "111153d0c675eaa415b8e5f383c6388bff446c62",
            "logonTypes": "Interactive",
            "logOnMachinesCount": 8,
            "isDomainAdmin": true,
            "isOnlyNetworkUser": false
        },
		...
    ]
}