Nightfall Agent: Logs Show Error: "Error: Agent not authorized for full disk access."

Last updated: January 7, 2026

Issue

Full Disk Access error is being shown:

  • /var/root/Library/Application Support/NightfallAIAgent/Logs shows error:

Error: Agent not authorized for full disk access.

  • Console endpoint status shows, "Missing full disk access".

Environment

  • macOS: All versions

  • Nightfall Endpoint Agent: v1.2.7 and higher

Cause

Full Disk Access (FDA) is not enabled locally for the NightfallAIAgent process.

Resolution

Local (from the machine):

  1. Navigate to: Settings > Privacy & Security > Full Disk Access

  2. Toggle on Full Disk Access for the NightfallAIAgent

MDM:

  1. Select the appropriate MDM walkthrough according to the MDM being utilized.

  2. Confirm that the ".mobileconfig" profile is being pushed out successfully. This profile sets up Full Disk Access permissions for the agent.

  3. Redeploy following the steps within the MDM guide of choice; confirm none of the steps were missed.

The agent requires Full Disk Access to run successfully.

Referenced Links