The correct retention period is 45 days . In Falcon Host Management, a host becomes inactive when its sensor no longer sends heartbeat communication back to the CrowdStrike cloud. Inactive status is identified by the host’s Last Seen timestamp, allowing administrators to determine when the endpoint last communicated. Falcon automatically removes hosts that remain inactive for more than 45 days from both the Host Management page and the Trash page. This behavior prevents stale endpoint records from remaining indefinitely in the operational console while still giving administrators time to review, delete, restore, or investigate host records before they age out. The 60-day, 75-day, and 90-day options do not match the documented Falcon host lifecycle. This topic belongs to Host Management and Setup, specifically inactive host cleanup, deleted host handling, Trash retention, and endpoint lifecycle management.