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Fix Redis Server Not Starting: Port Already in Use - Resolve Error 0xc004c003 When Offline-Yarn Install Hangs on Resolving Packages Timeout

Updated 2026-06-13 15:14:20macos-help
Fix Redis Server Not Starting: Port Already in Use - Resolve Error 0xc004c003 When Offline-Yarn Install Hangs on Resolving Packages Timeout
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.