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FANUC Alarm HOST-299SMB: DOS Error %d from PC

FANUC HOST-299 (“SMB: DOS Error %d from PC”): The PC responded to a PC share request with a DOS File Error. First check: First, check for an alarm cause code for more information on the specific DOS error.

Updated 2026-08-29 · LogrobotLM reference

Description

The PC responded to a PC share request with a DOS File Error.

Remedy · Remède

First, check for an alarm cause code for more information on the specific DOS error. If no alarm cause code exists, note the DOS error code. Lookup the DOS error code in the PC Share manual. If the problem persists, document the events that led to the error, and call your FANUC or FANUC Robotics technical representative.

Frequently asked · Questions fréquentes

What does FANUC alarm HOST-299 mean?
FANUC HOST-299 (“SMB: DOS Error %d from PC”): The PC responded to a PC share request with a DOS File Error.
How do you troubleshoot FANUC alarm HOST-299?
First, check for an alarm cause code for more information on the specific DOS error. If no alarm cause code exists, note the DOS error code. Lookup the DOS error code in the PC Share manual. If the problem persists, document the events that led to the error, and call your FANUC or FANUC Robotics technical…

Related codes / Codes liés

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. · Informations indicatives issues du terrain — le manuel du constructeur et ses procédures de sécurité font foi. Ne shuntez jamais un organe de sécurité ; consignez (LOTO) avant toute intervention physique. How this reference is built →