What does HRESULT 0x8024402C (WU_E_PT_WINHTTP_NAME_NOT_RESOLVED) mean?

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Description:

Windows Update could not resolve the DNS name of the proxy or target server.

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WU_E_PT_HTTP_STATUS_NOT_MAPPED	WU_E_PT_LOAD_SHEDDING

WU_E_PT_WINHTTP_NAME_NOT_RESOLVED

WU_E_PT_WINHTTP_NAME_NOT_RESOLVED maps to a WinHTTP name-resolution failure. The unresolved name may be the update server itself or the configured proxy, so do not assume that public DNS is the only issue.

What to check

Determine whether the client is configured for direct access, a proxy, or an intranet WSUS endpoint.
Test DNS resolution for the actual target and, when applicable, the proxy host from the affected device and network context.
Verify VPN, DNS suffix, split-DNS, and proxy settings before resetting Windows Update data.

netsh winhttp show proxy

Microsoft: WUA networking error codes

Microsoft: Windows Update proxy selection

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