0x8024402C 🪟 Windows

Windows Update error 0x8024402C (cannot connect to update server)

Windows Update can’t reach Microsoft’s servers — a proxy, DNS, firewall or WSUS setting is blocking the connection.

Seen on: Windows

Meaning

0x8024402C maps to WU_E_PT_WINHTTP_NAME_NOT_RESOLVED: the update server name couldn’t be resolved or reached. Leftover proxy settings, a WSUS server configured by policy that no longer exists, or DNS filtering are typical.

Common causes

  • WinHTTP proxy set to an unreachable proxy
  • Group policy points to an old WSUS server
  • DNS/firewall blocking Microsoft update domains
  • VPN/security software intercepting traffic

⚡ Quick fix

  1. Reset the WinHTTP proxy
  2. Remove stale WSUS policy (UseWUServer)
  3. Test DNS for windowsupdate.com

Detailed fix by platform

Windows

  1. powershell
    netsh winhttp show proxy
netsh winhttp reset proxy
reg query HKLM\SOFTWARE\Policies\Microsoft\Windows\WindowsUpdate\AU /v UseWUServer

How to diagnose

  1. Proxy — netsh winhttp show proxy
  2. WSUS — WU policy keys
  3. DNS — nslookup fe2.update.microsoft.com

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