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czwgFlag for United Kingdom of Great Britain and Northern Ireland

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PXE Boot image download fails

WDS  deployment fails to download boot image after successful PXE boot and MSTFTP connection to server.

The image starts to download but hangs at about 10% then times out with a message: " a required device isn't connected or cannot be accessed"

 error just started after years of successful use of wds.  

Have tried:
updating the boot image from a windows release 1809 source

Ditto from OEM rescue usb for destination pc

Including drivers for all possible NIC

Failure occurs on different hardware and UEFI or legacy PXE boot
ASKER CERTIFIED SOLUTION
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Sajid Shaik M
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czwg
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ASKER

Following up on Sajid's suggestion I created a custom log on the WDS Server and cleared the existing - not strictly necessary but both useful learning for me so I'll document what I did here:

Event Viewer (Local)
Custom Views
Right Click - Create Custom View

Filtered by Source:  Deployment Image Servicing And Management API, Deployment Image Servicing And Management CLI, Deployment-Services-Diagnostics

Clearing the log:
WevtUtil.exe cl Microsoft-Windows-Deployment-Services-Diagnostics/Operational
WevtUtil.exe cl Microsoft-Windows-Deployment-Services-Diagnostics/Admin

I then tried a PXE Client boot again and got this error:

The Following Client failed TFTP Download:

Client IP: 192.168.0.61
Filename: \Boot\x64\Images\20190319ScanBoot.wim
ErrorCode: 13
File Size: 306858352
Client Port: 11116
Server Port: 56777
Variable Window: true

Googling "The Following Client failed TFTP Download" I found multiple posts about error 1406 but only one for error 13

https://community.spiceworks.com/topic/2199981-mdt-wds-uefi-pxe-boot-used-to-work

This exactly parallels my experience including when the error started and the suggested solution worked for me:

Go into WDS, expand the servers.  Right click on the server and select Properties.  On the TFTP tab uncheck "Enable Variable Windows Extension"
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czwg
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ASKER

Sajid put me on the track. I knew I should investigate the logs but it was his suggestion which led me to actually do it and ultimately find the solution.
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Sajid Shaik M
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good to hear that.. thans for the post as well..