Windows / Intune error

0X8024402C

The proxy or server name could not be resolved.

Symbol / family
WU_E_PT_WINHTTP_NAME_NOT_RESOLVED
Signed decimal
-2145107924
Unsigned decimal
2149859372

What it means here

Windows Update could not resolve a required service or proxy hostname through WinHTTP networking.

Technical reference: Microsoft documentation or Microsoft-hosted support material

Resolution playbook

From symptom to verified fix

Start with evidence, change one variable at a time, and confirm the result before closing the incident.

1

Likely causes

  • DNS cannot resolve the service hostname.
  • A proxy, VPN, firewall, or TLS inspection path is interrupting the request.
  • The client is using an incorrect or retired endpoint.
2

Recommended fix

  1. Test DNS resolution in the device and SYSTEM context.
  2. Review WinHTTP proxy configuration and PAC behavior.
  3. Validate firewall and proxy access to the documented Windows Update endpoints.
3

Verify

  1. Repeat the smallest operation that originally failed.
  2. Confirm the same HRESULT does not recur at the matching timestamp.
  3. Check the management console or service report for a fresh successful state, not only a client-side message.
4

Escalate when

  • The error persists after the relevant checks and a clean retry.
  • Multiple devices, users, or networks show the same failure, suggesting service or policy scope.
  • You can provide the exact UTC time, operation, device/build, correlation identifiers, and the relevant event or service logs.
Check DNS and the WinHTTP proxy
Resolve-DnsName <service-hostname>
netsh winhttp show proxy

Replace the placeholder with the hostname from the failing log. Both commands are read-only.

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