MDT error with 21H2

[Jobos]

I have been using MDT for the past few years and it's worked really well but just lately it's started playing up in a strange way and I can't find the same issue on google.

 

MDT is on a VM running server 2019 and I've just updated the images from 1909 to 21H2. I kept the same task sequence just changed what OS to install. This works fine when I image an old Acer E5-571 that I use for testing, the image deploys, windows installs updates from WSUS, apps deploy, windows updates runs for the last time and it done.

 

The problems start when I try to image a Dynabook Satellite Pro C50 which were bought in 2020. When we got them I didn't have time to make a new image so I used the 1909 image that I already had and it worked fine but now I want to go straight into 21H2 which is causing me problems.

 

When I image the Dynabooks MDT gets as far as windows updates then hangs at a blank window. The monitors page in MDT reports the status as failed at 63% complete. None of the apps deploy and WSUS says the Dynabook is waiting to report. I can manually run windows update by mapping a drive to MDT and running the command 'cscript ZTIWindowsUpdate.wsf' which pulls the updates from the WSUS server and they install fine. WSUS now looks correct and says no updates are needed.

 

Right or wrongly I installed KB4564442 on the MDT server hoping that would fix it but still the same https://support.microsoft.com/en-us/topic/windows-10-deployments-fail-with-microsoft-deployment-toolkit-on-computers-with-bios-type-firmware-70557b0b-6be3-81d2-556f-b313e29e2cb7

 

 

I've spent a lot of time on this but getting nowhere and any pointers would be appreciated.

[Jawloms]

We had similar here and it was the last cumulative update (April) causing the issue. Take that out the equation and see if that solves it. Block it in the "Rules" by adding "wumu_excludekb1="&whatever the update number is.

 

Stuart

[clareq]

I have had similar issues with the HP 255 - a BIOS update fixed it.

[Jobos]

Thanks both. I disabled the updates in WSUS but the task still failed so next I updated the BIOS from 1.03 to 1.04 and ran the task again but this time it completed just fine. The readme with the BIOS update says the changes are to optimize the smart fan curve but guess there is more to it than just the fan.

 

Thanks again.