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Fix Windows Update Failed to Connect to Internet Error - How to Resolve Port Already Allocated by Defender-Fix Cloudflare DNS Issues Step by Step

Updated 2026-06-13 14:26:55cloud-software
Fix Windows Update Failed to Connect to Internet Error - How to Resolve Port Already Allocated by Defender-Fix Cloudflare DNS Issues Step by Step
Likely symptom
Likely cause
Safe rollback

Verification route

  • Repeat the original action, not only a simplified test case.
  • Restart the app or reload the service after configuration changes.