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Fix PowerShell 502 Bad Gateway After Windows Update - Troubleshoot 'Command Not Found' in Windows Defender-Nginx Permission Denied on Upstream Socket Fix

2026-06-13 21:03:59
Fix PowerShell 502 Bad Gateway After Windows Update - Troubleshoot 'Command Not Found' in Windows Defender-Nginx Permission Denied on Upstream Socket Fix

Result check

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