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martin_macf's avatar
martin_macf
Copper Contributor
Apr 30, 2021

Windows Autopilot Error Code 0x800705b4 Preparing device for mobile management

We are implementing a number of Windows Autopilot via Lenovo Thinkbook 15-ITL. These are being deployed to authorised users whether they are at home connected to their home broadband or in the office...
Autopilot
Error
preparing your device
Rudy_Ooms_MVP's avatar
Rudy_Ooms_MVP
MVP
Apr 30, 2021

martin_macf 

 

Hi,

 

This error could mean a Time Out error ... 

 

The error itself is normally due to a tpm error: 

 

Are you using Autopilot or Autopilot white glove?. If using white glove, make sure you have checked if the tpm also support attestation: Tpmtool getdeviceinformation

But just like you told us, after a few reinstalls it works.... Did you also tried to clear the tpm before a reinstall?

 

 

 

  • martin_macf's avatar
    martin_macf
    Copper Contributor
    Apr 30, 2021
    We are using Autopilot OOBE. The TPM is an odd thing because we have 100+ Lenovo laptops. Eventually it does go through but if it is connected to our Wide Area Network if tends to fail at this stage and there are no ports being blocked that we can see. When you say clear the TPM before a reinstall what do you mean by that?

    Thanks
    Martin
    • Rudy_Ooms_MVP's avatar
      Rudy_Ooms_MVP
      MVP
      Apr 30, 2021
      Hi,

      I will place my money on the timeout problem... for now..
      You could open tpm.msc and clear the tpm on the right side.. maybe it would trigger something
      But if you are installing the same device multiple times and af the 4th time, its working... it looks like timeout/firewall settings
      • ben_oas279's avatar
        ben_oas279
        Copper Contributor
        May 19, 2021

        martin_macf 

        Recently we're also experiencing this same intermittent error during our User-driven Autopilot profile on 20H2 HP laptops as well. Our scenario is we're early on in a migration from legacy AD-joined and MEMCM managed to Intune co-management with MEMCM. We wipe/reset the devices (either via Company portal or through Windows) to put the device into OOBE and into Autopilot. There isn't any CM Client stuff on there after this wipe or reset.

         

        Get-AutopilotDiagnostics for these devices for which this error occurs seems to indicate the Autopilot issue happens very early in the 'Device Preparation' portion. Last event is "Download started" for Sidecar and is only the 4th event in the timeline.

         

        Have looked at BIOS/UEFI time, and any profile and app changes we've made recently, also have tried clearing the TPM as part of our wipe (also tried during OOBE), and hasn't consistently helped. Again it's intermittent and some users might get this error, wipe/reset, then go through successfully on the same device.

         

        I would agree with Rudy_Ooms_MVP that it is a web filtering/firewall issue, that there are certain Intune services the device can only partially connect to? But having difficulty determining what they are specifically. Have gone through the required Intune URLs and all are open, including those for the TPM (infineon, etc). 

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