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Fix 'Run PowerShell Script Command Not Found' Error - Fixing 'Connection Refused' in Command Prompt Due to Firewall-Windows Defender Multi-Drive Scheduled Scan Setup

Updated 2026-06-13 22:26:46windows-fixes
Fix 'Run PowerShell Script Command Not Found' Error - Fixing 'Connection Refused' in Command Prompt Due to Firewall-Windows Defender Multi-Drive Scheduled Scan Setup
Likely symptom
Likely cause
Safe rollback

Verification route

  • Repeat the original action, not only a simplified test case.
  • Restart the app or reload the service after configuration changes.