LogrobotLM

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FANUC Alarm HOST-288 — SMB: DOS error: Access denied

FANUC HOST-288 (“SMB: DOS error: Access denied”): The PC server denied the robot controller access to a file, share, or directory path. First check: Verify your username and re-enter your password in the robot controller client tag setup screens.

Updated 2026-09-17 · LogrobotLM reference

Description

The PC server denied the robot controller access to a file, share, or directory path.

Remedy

Verify your username and re-enter your password in the robot controller client tag setup screens. Verify permissions have been properly set on the shared folder on the remote PC. If the problem persists, document the events that led to the error, and call your FANUC or FANUC Robotics technical representative.

Related codes

HOST-286SMB: DOS error: Path not foundHOST-287SMB: DOS error: Too many open filesHOST-289SMB: DOS error: Requested share does not existHOST-299SMB: DOS Error … from PC

Indicative field information — the robot manufacturer's manual and safety procedures always prevail. Never bypass a safety device; apply lockout/tagout (LOTO) before any physical intervention. How this reference is built →