Investigate devices in the Microsoft Defender ATP Devices list


Welcome to Microsoft Defender for Endpoint, the new name for Microsoft Defender Advanced Threat Protection. Read more about this and other updates here. We'll be updating names in products and in the docs in the near future.

Applies to:

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Investigate the details of an alert raised on a specific device to identify other behaviors or events that might be related to the alert or the potential scope of the breach.


As part of the investigation or response process, you can collect an investigation package from a device. Here's how: Collect investigation package from devices.

You can click on affected devices whenever you see them in the portal to open a detailed report about that device. Affected devices are identified in the following areas:

When you investigate a specific device, you'll see:

  • Device details
  • Response actions
  • Tabs (overview, alerts, timeline, security recommendations, software inventory, discovered vulnerabilities, missing KBs)
  • Cards (active alerts, logged on users, security assessment)

Image of device view

Device details

The device details section provides information such as the domain, OS, and health state of the device. If there's an investigation package available on the device, you'll see a link that allows you to download the package.

Response actions

Response actions run along the top of a specific device page and include:

  • Manage tags
  • Isolate device
  • Restrict app execution
  • Run antivirus scan
  • Collect investigation package
  • Initiate Live Response Session
  • Initiate automated investigation
  • Consult a threat expert
  • Action center

You can take response actions in the Action center, in a specific device page, or in a specific file page.

For more information on how to take action on a device, see Take response action on a device.

For more information, see Investigate user entities.


The tabs provide relevant security and threat prevention information related to the device. In each tab, you can customize the columns that are shown by selecting Customize columns from the bar above the column headers.


The Overview tab displays the cards for active alerts, logged on users, and security assessment.

Image of overview tab on the device page


The Alerts tab provides a list of alerts that are associated with the device. This list is a filtered version of the Alerts queue, and shows a short description of the alert, severity (high, medium, low, informational), status in the queue (new, in progress, resolved), classification (not set, false alert, true alert), investigation state, category of alert, who is addressing the alert, and last activity. You can also filter the alerts.

Image of alerts related to the device

When the circle icon to the left of an alert is selected, a fly-out appears. From this panel you can manage the alert and view more details such as incident number and related devices. Multiple alerts can be selected at a time.

To see a full page view of an alert including incident graph and process tree, select the title of the alert.


The Timeline tab provides a chronological view of the events and associated alerts that have been observed on the device. This can help you correlate any events, files, and IP addresses in relation to the device.

The timeline also enables you to selectively drill down into events that occurred within a given time period. You can view the temporal sequence of events that occurred on a device over a selected time period. To further control your view, you can filter by event groups or customize the columns.


For firewall events to be displayed, you'll need to enable the audit policy, see Audit Filtering Platform connection. Firewall covers the following events

  • 5025 - firewall service stopped
  • 5031 - application blocked from accepting incoming connections on the network
  • 5157 - blocked connection

Image of device timeline with events

Some of the functionality includes:

  • Search for specific events
    • Use the search bar to look for specific timeline events.
  • Filter events from a specific date
    • Select the calendar icon in the upper left of the table to display events in the past day, week, 30 days, or custom range. By default, the device timeline is set to display the events from the past 30 days.
    • Use the timeline to jump to a specific moment in time by highlighting the section. The arrows on the timeline pinpoint automated investigations
  • Export detailed device timeline events
    • Export the device timeline for the current date or a specified date range up to seven days.

More details about certain events are provided in the Additional information section. These details vary depending on the type of event, for example:

  • Contained by Application Guard - the web browser event was restricted by an isolated container
  • Active threat detected - the threat detection occurred while the threat was running
  • Remediation unsuccessful - an attempt to remediate the detected threat was invoked but failed
  • Remediation successful - the detected threat was stopped and cleaned
  • Warning bypassed by user - the Windows Defender SmartScreen warning was dismissed and overridden by a user
  • Suspicious script detected - a potentially malicious script was found running
  • The alert category - if the event led to the generation of an alert, the alert category ("Lateral Movement", for example) is provided

You can also use the Artifact timeline feature to see the correlation between alerts and events on a specific device.

Event details

Select an event to view relevant details about that event. A panel displays to show general event information. When applicable and data is available, a graph showing related entities and their relationships are also shown.

To further inspect the event and related events, you can quickly run an advanced hunting query by selecting Hunt for related events. The query will return the selected event and the list of other events that occurred around the same time on the same endpoint.

Image of the event details panel

Security recommendations

Security recommendations are generated from Microsoft Defender ATP's Threat & Vulnerability Management capability. Selecting a recommendation will show a panel where you can view relevant details such as description of the recommendation and the potential risks associated with not enacting it. See Security recommendation for details.

Image of security recommendations tab

Software inventory

The Software inventory tab lets you view software on the device, along with any weaknesses or threats. Selecting the name of the software will take you to the software details page where you can view security recommendations, discovered vulnerabilities, installed devices, and version distribution. See Software inventory for details

Image of software inventory tab

Discovered vulnerabilities

The Discovered vulnerabilities tab shows the name, severity, and threat insights of discovered vulnerabilities on the device. Selecting specific vulnerabilities will show a description and details.

Image of discovered vulnerabilities tab

Missing KBs

The Missing KBs tab lists the missing security updates for the device.

Image of missing kbs tab


Active alerts

The Azure Advanced Threat Protection card will display a high-level overview of alerts related to the device and their risk level, if you have enabled the Azure ATP feature, and there are any active alerts. More information is available in the "Alerts" drill down.

Image of active alerts card


You'll need to enable the integration on both Azure ATP and Microsoft Defender ATP to use this feature. In Microsoft Defender ATP, you can enable this feature in advanced features. For more information on how to enable advanced features, see Turn on advanced features.

Logged on users

The Logged on users card shows how many users have logged on in the past 30 days, along with the most and least frequent users. Selecting the "See all users" link opens the details pane, which displays information such as user type, log on type, and when the user was first and last seen. For more information, see Investigate user entities.

Image of user details pane

Security assessments

The Security assessments card shows the overall exposure level, security recommendations, installed software, and discovered vulnerabilities. A device's exposure level is determined by the cumulative impact of its pending security recommendations.

Image of security assessments card