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Windows Update Error 0x80072EFD — Connection Failed

Warningupdate

Overview

Windows Update error 0x80072EFD means Windows cannot connect to the update servers due to a network error.

Key Details

  • ERROR_WINHTTP_CANNOT_CONNECT — connection failure
  • Cannot reach Microsoft update servers
  • Different from 0x80072EE7 (DNS) — this is connection level
  • Firewall or proxy likely blocking

Common Causes

  • Firewall blocking outbound HTTPS connections
  • Proxy server requiring authentication
  • VPN interfering with update traffic
  • ISP-level blocking of update servers

Steps

  1. 1Temporarily disable firewall and proxy
  2. 2Allow Windows Update through firewall on port 443
  3. 3Reset WinHTTP proxy: netsh winhttp reset proxy
  4. 4Try updating on a different network

Tags

windowsupdateupdate 0x80072efderrorfix

More in Update

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windows-80070005-access-deniedWindows Error 0x80070005 — Access Denied
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windows-80070057-invalid-parameterWindows Error 0x80070057 — Invalid Parameter
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windows-80072EE7-server-connection-failedWindows Error 0x80072EE7 — Server Connection Failed
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windows-80073712-component-store-corruptedWindows Error 0x80073712 — Component Store Corrupted
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windows-800F081F-source-files-not-foundWindows Error 0x800F081F — Source Files Not Found
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Frequently Asked Questions

Primarily HTTPS port 443 to Microsoft update servers.