Where is the log for Windows 11 failed upgrades ?

Todd Chester 646 Reputation points
2022-10-05T10:36:00.613+00:00

Hi All,

Windows 11-21H2

I am trying to upgrade to 22H2. After going through all the motions, I get rolled back with "Installation failed in SAFE_OS phase with an error during BOOT operation 0xC1900101 0x20017" error.

Where is the log file for me to look up what crashed?

247725-screenshot-2022-10-03-05-20-32.png

Which begs the question, why is it save to run 21H2 and not 22H2?

Windows 11
Windows 11
A Microsoft operating system designed for productivity, creativity, and ease of use.
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  1. Todd Chester 646 Reputation points
    2022-10-05T14:25:29.233+00:00

    Found it:

    From:
    https://www.yourwindowsguide.com/2021/08/troubleshoot-windows-11-upgrade-failures.html

    C:\$Windows.~BT\Sources\Panther: File named Setupact.log records actions in the downlevel and SafeOS phase. As the log can be very large, setup also creates a file named “Setuperr.log” that only has information about the errors encountered by the Setup to narrow the source of the problem.

    And from the same article:

    Error Code Troubleshooting
    C1900101-20017 A driver has caused an illegal operation. Make sure all unnecessary devices are disconnected except the keyboard and mouse.Remove any 3rd party anti-virus.Make sure BIOS firmware is updated on the motherboard.

    Now to figure out what driver is causing it.


  2. Limitless Technology 39,436 Reputation points
    2022-10-06T14:53:17.9+00:00

    Hi,

    If you're using a RAID or SSD controller for storage, you may find that the driver is not compatible with 22H2. Hence why the installation fails. You can try connecting your storage to a standard SATA connection for the duration of the installation and then swap it back once you have installed the updated drivers from within 22H2.

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  3. Todd Chester 646 Reputation points
    2022-10-06T15:23:08.97+00:00

    Host = Fedora 36
    Hypervisor = qemu-kvm-6.2.0-15.fc36.x86_6

    It is already on sata. Dang!

    <disk type="file" device="disk">
    <driver name="qemu" type="qcow2"/>
    <source file="/home/kvm/KVM-W11.qcow2"/>
    <target dev="sda" bus="sata"/>
    <boot order="2"/>
    <address type="drive" controller="0" bus="0" target="0" unit="0"/>
    </disk>

    248181-screenshot-2022-10-06-08-21-30.png

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