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Fix Windows Update Connection Refused When Using VPN - How to Resolve Defender 502 Bad Gateway Error-Windows Terminal Error 0x80000003 Fix

2026-06-14 03:56:19
Fix Windows Update Connection Refused When Using VPN - How to Resolve Defender 502 Bad Gateway Error-Windows Terminal Error 0x80000003 Fix

Result check

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