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Mac Error Code -600 — Process Not Found

Warningsystem

Overview

Mac error code -600 means the required process or application could not be found, typically during inter-process communication.

Key Details

  • procNotFound — target process does not exist
  • Common with Apple Events and AppleScript
  • Application may have crashed or not launched
  • Can occur when automating tasks between apps

Common Causes

  • Target application is not running
  • Application crashed during communication attempt
  • AppleScript referencing wrong application name
  • Sandbox restrictions preventing inter-app communication

Steps

  1. 1Ensure the target application is open and running
  2. 2Restart the application and retry
  3. 3Check AppleScript application name spelling
  4. 4Grant automation permissions in System Preferences > Privacy

Tags

macmacossystemerror 600fixtroubleshooting

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Frequently Asked Questions

macOS tried to communicate with an app that is not running or cannot be found.