After installation of KB4056892 boot failure, after roll-back error 0x800f0845

Anonymous
2018-01-04T22:13:27+00:00

Hi,

I have older AMD Athlon 64 X2 6000+, Asus MB, after installation of KB4056892 the system doesn't boot, it only shows the Windows logo without animation and nothing more. After several failed boots it do roll-back then it shows error 0x800f0845. Unfortunately, it seems it's not easy to disable the automatic updates without gpedit tweaks, so it tries installing and rolling-back the update over and over. The sfc /scannow shows no problem, in-place upgrade also doesn't seem to help. I can try full reinstall, but I doubt it will change anything. It seems like the update is binary incompatible with my old CPU. I understand that making the machine unbootable is the best protection from remote exploitation, but I would rather have the OS working. Especially if my CPU is not vulnerable to the Meltdown attack and the MS mitigation attempts for Spectre is more than questionable. I could find only some German and Italian people reporting the same issue (well the CPU is quite pre-historic and the KB update is very fresh), but no info / acknowledgment from the MS so far. I have Czech localization. Could anybody provide more information?

Windows for home | Windows 10 | Windows update

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  1. Anonymous
    2018-01-06T00:49:21+00:00

    For recovery I booted the machine two times, both boots ended by hardlockup, so I powered the machine off and started it on again. During the third boot it automatically rolled back the update, then I disable automatic updates by gpedit. On windows Pro it can be done by e.g.: https://www.windowscentral.com/how-stop-updates-installing-automatically-windows-10

    Ciao Jaroslav,

    more or less I did the same getting the automatic roll-back (in italian: ripristino automatico) screen, but after a while it failed with the message (in italian):

      Impossibile ripristinare il tuo PC

    which translating is

      impossible to restore your PC

    So when I boot or it freezes, as described in this discussion, or it tries to roll-back but fails...

    When it fails it proposes to Switch off the PC or the Advanced Option. Here there the option Problem Resolution which offers other options. Reset the PC or other Advanced Options between which DOS box, roll-back from a restore point and so on.

    Ciao, Angelo.

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  2. Anonymous
    2018-01-06T00:30:40+00:00

    I'm having same problem on 3 machines .All Amd

    I notice  there is a similar update called delta on the page is this same thing ? as the one that locks up?

    https://www.catalog.update.microsoft.com/Search.aspx?q=KB4056892

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  3. Anonymous
    2018-01-06T00:17:44+00:00

    I can report the same problem on Athlon X2 4200+.

    I was forced to perform a system reset as automatic repair as well as system restore also failed when the os did not boot (like AngeloGr above).

    After a reset and and then a clean reinstall (wiping c: clean), this update still freezes the system at startup. Also, windows update keeps insisting on installing this update, if i want to get other updates and there seems no way to block this update. So it seems that either i stop updates or everytime after updating reboot the system after failure till it goes into automatic repair and reverses this update (virtualization was off at all times).

    Any ideas... And MS, at least officially acknowledge the bug and that someone is looking into it.

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  4. Anonymous
    2018-01-06T00:17:13+00:00

    you can pause Windows Update inside Advanced Options in Windows Update options.

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  5. Anonymous
    2018-01-06T00:12:20+00:00

    For recovery I booted the machine two times, both boots ended by hardlockup, so I powered the machine off and started it on again. During the third boot it automatically rolled back the update, then I disable automatic updates by gpedit. On windows Pro it can be done by e.g.: https://www.windowscentral.com/how-stop-updates-installing-automatically-windows-10

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    4 people found this answer helpful.
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