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Fix PowerShell Login Loop Error 0x80070002 - Windows Defender Update Error 0x800704cf Guide-Fix 'Windows Update Port Already Allocated Permission Denied'

2026-06-14 16:22:53
Fix PowerShell Login Loop Error 0x80070002 - Windows Defender Update Error 0x800704cf Guide-Fix 'Windows Update Port Already Allocated Permission Denied'

Result check

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