Windows Update Error 0x80072EFD — Connection Failed

Windows Update error 0x80072EFD means Windows cannot connect to the update servers due to a network error. This guide covers everything you need to know about this topic, including common causes, step-by-step solutions, and answers to frequently asked questions.

Here are the key things to understand: ERROR_WINHTTP_CANNOT_CONNECT — connection failure. Cannot reach Microsoft update servers. Different from 0x80072EE7 (DNS) — this is connection level. Firewall or proxy likely blocking. Understanding these fundamentals will help you diagnose and resolve this issue more effectively.

The most common reasons this occurs include: Firewall blocking outbound HTTPS connections. Proxy server requiring authentication. VPN interfering with update traffic. ISP-level blocking of update servers. Identifying the root cause is the first step toward finding the right solution.

To resolve this, follow these recommended steps: Temporarily disable firewall and proxy. Allow Windows Update through firewall on port 443. Reset WinHTTP proxy: netsh winhttp reset proxy. Try updating on a different network. If these steps do not resolve the issue, consider consulting additional resources or a qualified professional.

This article is part of our Windows Error Codes collection on Error Codes Wiki. We provide comprehensive, up-to-date information to help you find solutions quickly.