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How to Fix MySQL Workbench Error 2003: Can't Connect to MySQL Server - Troubleshoot cmd.exe High Resource Usage-Windows Security Firewall 504 Gateway Timeout Fix

Updated 2026-06-19 07:02:38cloud-software
How to Fix MySQL Workbench Error 2003: Can't Connect to MySQL Server - Troubleshoot cmd.exe High Resource Usage-Windows Security Firewall 504 Gateway Timeout Fix
Before changing system settings, save your work and note the exact error text so you can compare results after each step.

Extra verification checklist

  • Restart the affected app after changing permissions or configuration files.
  • Test the same workflow in a clean browser profile or a temporary user account.
  • Compare the result on another network if the error may be connection related.

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