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Fix 'java' Not Recognized in Command Prompt on Windows - How to Resolve Windows Error 0x80070520-How to Fix Port Already Allocated in Windows Update

2026-06-13 16:31:44developer-tools
Fix 'java' Not Recognized in Command Prompt on Windows - How to Resolve Windows Error 0x80070520-How to Fix Port Already Allocated in Windows Update

Final checklist

  • Confirm that the same symptom is gone after a restart or refresh.
  • Keep the smallest working change and undo temporary diagnostic settings.