Why can I not get a WDS-originated PXE boot to progress past the first file download? And then gives the message 'TFTP download failed.' TFPT download failed. Sure you will speed-up WDS/MDT/SCCM TFTP transfers. PXE Fails TFTP Download. Media Resource Center; Media & Contacts.
I have this same problem trying to image some servers, they are all new servers using 2 x Quad-core processors. The problem seems to be with EMT64 capable Intel processors, they negotiate themselves to the WDS servers as 64-bit capable (no problem there, it works every time) via the WDSNBP.COM file (after having run wdsutil /set-server architecturediscovery:Yes anyway). The problem is at the point where it attempts to download the pxeboot.com file, I then -almost immediately - receive a 'TFTP Download Failed Press any key to restart.'
Now, this is where it becomes interesting, twice (out of roughly 150 attempts) - on consecutive attempts - the Vista bootmanager file downloaded and ran successfully, however, when selecting the RIS mode from the list of options, I then receive the 'TFTP Download failed; message (please note, it is a different message) without the 'Press any key to.' If I try an old machine, 32-bit capable only - in this case a Dell GX240 - against the same machine, it works correctly. I have un-installed & re-installed the WDS services, this has not solved the problem, I have been forced to unitialize the server, then re-run the WDS Legacy app to re-add an image and create the required reminst share, etc. The 64-bit capable servers now work correctly - interestingly using the startrom.com file which provides the 'TFTP Download Failed' message above. I am at a complete loss with this problem now, I have tried different switches, different modes on our ProCurve switches (IGMP Snooping on/off, STP on/off), I've even plugged it into an old hub that we have hanging around, all to no avail. I then tried turning the multi-core functionality off for the processors, this made no difference either. I saw no option to disable the EMT64 extensions in BIOS, this wouldn't of been a fix anyway as it is a 64-bit version of Windows 2003 Enterprise server I am trying to install.