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Understanding ARP Snapshot Timestamp Behavior – Learning Mode vs. Active Mode

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Issue

  • When Anti-Ransomware Protection (ARP) is enabled at the volume level, it initially runs in a “learning” (dry run) mode to gather baseline information about normal file activity.
  • In learning mode, ARP does not generate new snapshots until it has collected enough data to establish what “normal” looks like.
  • The timestamp for ARP snapshot (for example: June 24, 2024) that is seen likely indicates the last event at which an ARP snapshot was taken. If no abnormal activity (e.g., unusual file extensions or unexpected encryption activity) has been detected since then, no new snapshots are created.

 

 

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