Windows update ignoring winhttp proxy bypass list

Chris M 1 Reputation point

I'm having a few devices that seem to ignore the winhttp proxy bypass list when running windows update.

The scenario is SCCM pushing Windows Updates. I can see in Wireshark that Windows Update is trying to use the proxy to get to the package server, but because our proxy is not able to reach that server it fails. There is a bypass set on the winhttp proxy that should send this traffic direct, but it is ignoring the bypass. Has anyone seen that before? Is there something I should be checking?

The error in the WindowsUpdate.log is 0x80072ef3 and the error in the SCCM WUAHandler.log is 0x80244004. Based on what I see in wireshark those are just general network connectivity errors.

Windows Server
Windows Server
A family of Microsoft server operating systems that support enterprise-level management, data storage, applications, and communications.
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  1. Candy Luo 12,666 Reputation points Microsoft Vendor

    Hi ,

    When you run netsh winhttp show proxy, will it return the correct proxy settings?

    0x80244004 means failed connecting to server. 0x80072ef3 means the handle is in the wrong state for the requested operation. The error message is general and we need to analyze network traffic to find the clues.

    However, analysis of log is beyond our forum support level and due to forum security policy, we have no such channel to collect user log information. So we recommend you open a case with MS Professional tech support service, they will help you open a phone or email case to Microsoft, so that you would get a technical support on a one-to-one basis while ensuring private information.

    Here is the link:

    Best Regards,



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