Microsoft Defender XDR
Hunting and detection

Advanced Hunting Microsoft Defender

In brief

The documentation now states that a newly created Microsoft Sentinel function in Log Analytics can take up to 20 minutes to appear in advanced hunting.

What Defender admins need to know

Allow up to 20 minutes for the function to appear.

Summaries are generated from the documentation change itself.

Documentation change

The comparison below shows only the changed extract. Use the full-page view for complete context.

  • Custom detections have the following limitations:
    • Near real-time detection frequency isn't available for detections that include Microsoft Sentinel data.
    • Custom functions that you create and save in Microsoft Sentinel aren't supported.
  • When creatingyou create a new Microsoft Sentinel function in Log Analytics, there is a delay ofit can take up to 20 minutes until it appearsto appear in Advanced Hunting.advanced hunting.
  • Bookmarks aren't supported in the advanced hunting experience. They're supported in the Microsoft Sentinel > Threat management > Hunting feature. Alternatively, you can use the Link to incident feature to link query results to new or existing incidents.
  • If you're streaming Defender XDR tables to Log Analytics, there might be a difference between the Timestamp and TimeGenerated columns. If the data arrives to Log Analytics after 48 hours, the ingestion process overrides it to now(). Therefore, to get the actual time the event happened, rely on the Timestamp column.
  • When prompting Security Copilot for advanced hunting queries, you might find that not all Microsoft Sentinel tables are currently supported. However, support for these tables can be expected in the future.