After more investigation, I found that the problem started at one site on Jan 8. I also found that HP driver updates were isntalled on the DPs on Jan 6. While I don't have a definitive smoking gun, my hunch is that the HP NIC driver update is the root cause.
The fix I found is documented in http://support.microsoft.com/kb/975710. I added the MaximumBlockSize entry and set it to 1024. As soon as I did that, PXE boots started working without issue. I probably should have tried the MaximumBlockSize sooner, but I just could not believe it was needed :) For what it's worth. Jeff On Thu, Jan 9, 2014 at 11:06 AM, Jeff Poling <[email protected]> wrote: > I am grasping at straws here. . .I have 7 sites with ConfigMgr 2012 SP1 > CU2 distribution points. The OS on the servers is Windows Server 2008 R2. > PXE is failing with a TFTP timeout. THe error code is PXE-E32 TFTP Open > timeout. > > I just was informed abut this issue, and I guess it has been occurring for > the last couple of weeks. The only change I can so far determine is that > December Windows Updates were installed just before Christmas. > > In addition, I do see an event log error entry for WDSIMGSRV that is event > ID 268. It does not have a lot of detail, but it occurs on each server > that has PXE issues. > > Are there any known issues with updates from December impacting PXE? > > Thanks, > > Jeff > >
