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Hi, I have recently installed 1902 and though I'd try the PXE Responder without WDS. It uninstalled WDS and the service for PXE Responder is running but whenever we try to build we get the following error "sccm PXE: recvfrom() failed for DHCP. 0x80072746.". I've since re-installed WDS and everything is working again. PXE: A0:8C:FD:D9:42:EB: 18058, GUID:11D3E3F7-385C-4446-BE52-200EEA465B33, SMBIOS ID is NOT a match, MAC Address is a match. SCCMPXE 09/05/2019 16:13:15 7996 (0x1F3C) PXE: A0:8C:FD:D9:42:EB: Using system record 18058, GUID:11D3E3F7-385C-4446-BE52-200EEA465B33. SCCMPXE 09/05/2019 16:13:15 7996 (0x1F3C) Operation: 2, Address type: 1, Address length: 6, Hop Count: 1, Transaction ID: 067b5c1f, Seconds since boot: 1024, Address: a0:8c:fd:d9:42:eb:00:00:00:00:00:00:00:00:00:00, Host name: , Boot file name: , Client IP: 0.0.0.0, Host IP: 0.0.0.0, Server IP: 172.27.22.72, Relay IP: 172.29.1.1 Options: 53, 1: 02 54, 4: ac 1b 16 48 97, 17: 00 e9 43 f4 97 47 7f 42 35 b9 45 ee aa 99 0e ba fe 60, 9: 50 58 45 43 6c 69 65 6e 74 SCCMPXE 09/05/2019 16:13:15 7996 (0x1F3C) PXE: Sending reply to 172.29.1.1, DHCP. SCCMPXE 09/05/2019 16:13:15 7996 (0x1F3C) PXE: recvfrom() failed for DHCP. 0x80072746. SCCMPXE 09/05/2019 16:13:15 9592 (0x2578)

Hi, I've updated to 1806 with all the hot fixes applied and decided to turn on "Enable a PXE responder without Windows Deployment Service" unfortunately it doesn't work and I've had to turn WDS back on which works. Below is the lines from the SMSPXE log. We have IP Helpers rather than using DHCP Scope options. PXE: BC:83:85:F5:0B:63: Parsed a discover/solicit packet. 17/10/2018 16:24:14 PXE: BC:83:85:F5:0B:63: C76B7D02-EA50-B10F-5E89-8BEFAA6609C9: Client is 64-bit, UEFI, Firmware. 17/10/2018 16:24:14 PXE: BC:83:85:F5:0B:63: Prioritizing local MP http://(our MP). 17/10/2018 16:24:14 Not in SSL 17/10/2018 16:24:14 Not in SSL 17/10/2018 16:24:14 Client Boot Get ID Info reply: <ClientIDReply><Identification Unknown="0" DuplicateSMBIOS="0" DuplicateMACAddress="0" ItemKey="0" ServerName=""><Machine><ClientID/><NetbiosName/></Machine></Identification><ClientIDInfo ItemKey="15673" ClientID="GUID:8D9AD297-22DE-49F9-96B6-F5E04C18297E" DuplicateSMBIOS="0" DuplicateMACAddress="0" MatchType="1"/><ClientIDInfo ItemKey="16798564" ClientID="GUID:39A05B11-0A61-4CB5-8827-5052E9CD3191" DuplicateSMBIOS="0" DuplicateMACAddress="0" MatchType="2"/></ClientIDReply> 17/10/2018 16:24:14 PXE: BC:83:85:F5:0B:63: System records: 17/10/2018 16:24:14 PXE: BC:83:85:F5:0B:63: 15673, GUID:8D9AD297-22DE-49F9-96B6-F5E04C18297E, SMBIOS ID is a match, MAC Address is NOT a match. 17/10/2018 16:24:14 PXE: BC:83:85:F5:0B:63: 16798564, GUID:39A05B11-0A61-4CB5-8827-5052E9CD3191, SMBIOS ID is NOT a match, MAC Address is a match. 17/10/2018 16:24:14 PXE: BC:83:85:F5:0B:63: Using system record 15673, GUID:8D9AD297-22DE-49F9-96B6-F5E04C18297E. 17/10/2018 16:24:14 PXE: Sending reply to 255.255.255.255, DHCP. 17/10/2018 16:24:14