zhizhu
Home / developer-tools / Fix Windows Defender Port Already Allocated in Event Viewer - Troubleshoot Windows Security Service Not Starting-Fix Windows Update Stuck Loading After Restart

Fix Windows Defender Port Already Allocated in Event Viewer - Troubleshoot Windows Security Service Not Starting-Fix Windows Update Stuck Loading After Restart

2026-06-13 16:51:14
Fix Windows Defender Port Already Allocated in Event Viewer - Troubleshoot Windows Security Service Not Starting-Fix Windows Update Stuck Loading After Restart

Result check

  • Keep one change per test run so you know which step helped.
  • Undo temporary changes after the issue is confirmed.