PXE – RequestMPKeyInformation: Send() failed.

I recently applied a hotfix to my SCCM Current Branch environment. When attempting to PXE boot a machine, the smspxe.log reported:

RequestMPKeyInformation: Send() failed.
PXE::MP_InitializeTransport failed; 0x80004005
PXE::MP_ReportStatus failed; 0x80070490
PXE::CPolicyProvider::InitializePerformanceCounters failed; 0x80070002
PXE::MP_LookupDevice failed; 0x80070490

PXE01

I first tried unchecking the PXE option on the distribution point to remove Windows Deployment Services and then re-enabling PXE support on the distribution point. This was the same issue.  After troubleshooting more I tried to open up http://fqdn/sms_mp/.sms_aut?mplist in IE and it displayed a 403.4 Forbidden Access error. My management point is not set to use HTTPS.

I checked the IIS logs on my management point and saw consistent 403.4 forbidden access on directories such as SMS_MP and ccm_system. In IIS on those virtual direcories, I checked the SSL Settings and noticed they were set to “Require SSL”. This is strange because my management point is in HTTP.

The fix was to uninstall the management point and then reinstall it. Keep an eye on MPSetup.log in your SCCM site server logs for when the MP has uninstalled and then re-add the role.

PXE started working again without any errors.

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