Problem:
Selecting the WINPE Menu option in the F8 menu fails with a MTFTP timeout error.
Selecting the Managed WINPE option in the F8 menu fails with a MTFTP timeout error.
Selecting the WINPE Provisioning option in the F8 menu works.
Cause:
New BIOSes have broken the tftp multicast option that WINPE Menu and Managed WINPE options use.
Solution:
Obtain the latest BIOS update from your hardware vendor.
As an example, Lenovo has released Bios Version 2.59 for various models that fixes this issue.
(See http://download.lenovo.com/ibmdl/pub/pc/pccbbs/mobiles/g1uj27uc.txt)
If your vendor does not yet have the latest Intel remote boot update within their bios, contact them and request that they update the BIOS to include this.
This was a defect introduced in newer versions of BIOS and should be remedied by the hardware vendor.
An alternative is to back-rev the BIOS to an earlier version prior to when this defect was introduced, however this should be done with caution.
The issues lies with the MTFTP (Multicast TFTP) portion of the remote boot agent. As a workaround, the usage of MTFTP within the LANDesk PXE Representative can be disabled:
In order to do this:
1. Set the following registry key to 0 on all PXE reps:
32-bit OS on PXE rep:
HKLM\SOFTWARE\Intel\PXE\Mtftpd\MCAST_ENABLE
64-bit OS on PXE rep:
HKLM\SOFTWARE\Wow6432Node\Intel\PXE\Mtftpd\MCAST_ENABLE
2. Restart the LANDesk PXE and LANDesk PXE MTFTP services on the PXE representative.