Problem: Windows Jobs stuck in loop, ucxjwx6m․exe is 0 bytes in Automic Agent
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Problem: Windows Jobs stuck in loop, ucxjwx6m․exe is 0 bytes in Automic Agent

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Article ID: 441265

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Updated On:

Products

CA Automic Workload Automation - Automation Engine

Issue/Introduction

Jobs on the Windows agent stop executing, start and stay in a loop, and no errors appear in the logs․​

Error Message: "None"

Symptoms:

  • Jobs stop executing and hang in an active state

  • Agent tries to start jobs and writes the initial line to the report file, but stops

  • The message binary (ucxjwx6m․exe) is reduced to 0 bytes

Context: Occurs during normal job execution on the Windows agent

Impact: Production down; jobs cannot execute

Environment

 

OS: Windows

Automic Automation Engine 24․4․2

Agent Windows 24․2․0

 

Cause

The ucxjwx6m․exe file is a critical component for executing jobsIf it becomes 0 bytes, jobs will hangThis is not caused by the Automic productLikely causes include the system running out of disk space or a security tool.

Resolution

Prerequisites:

  • Administrator access to the Windows agent server

  • A working copy of the ucxjwx6m․exe file from another agent directory

 

Steps:

1․ Replace the Message Binary

Path: Agent installation directory

Action: Copy the valid ucxjx6m․exe from another agent directory on the same server to replace the 0-byte file

Expected: The file replaces successfully

 

2․ Restart the Agent

Action: Restart the Automic Windows agent service

Expected: The agent starts successfully

 

3․ Restart Stuck Jobs

Action: Cancel any tasks that are stuck in an active state and restart them

Expected: Jobs begin executing and writing to report files normally

 

Verify Success:

  • Jobs execute without looping

  • The ucxjwx6m․exe file maintains its normal file size

Additional Information

Prevention:

Ensure adequate disk space and configure antivirus exclusions for the Automic agent directory. But, this must be done before the file becomes 0 bytes.