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
    2018-01-11T01:20:43+00:00

    My last successful update was KB4058702. 

    KB4056892 also failed to update in my laptop after multiple tries of updates, installs and restarts. I am using a multiple boot system that I have to pick OS on startup. I use a Dell Precision M2800, 64-bit, i7-4810MQ CPU, 16GB RAM, Win 10 Pro.

    Because KB4056892 failed to update on multiple retries, my laptop becomes very slow to a point it's unusable (although it managed to boot). I am disabling windows update services until there is a resolution and using my previous stable restore point.

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  4. Anonymous
    2018-01-10T21:49:51+00:00

    My Athlon 64 X2 6000+ on GeForce6100SM-M motherboard (Windows 10) was rendered useless by Microsoft's emergency update.  I then attempted Windows Recovery mode which wasted hours and hours of my time and ended up simply repeated the problem. 

    I ask Microsoft to make a very clear and public announcement when they again support older Athlon CPUs.  In the meantime my other machine, AMD Athlon 64 X2  laptop running fully updated Linux, runs just perfectly.

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  5. Anonymous
    2018-01-10T21:40:03+00:00

    Gianni1962

    Thank you.  You gave me a thought as to how I could prevent my two remaining non KB4056892 enhanced AMD fx-nnnn from joining the fun.  In addition to getting some work done and setting up the older X2 6000+ machine for the next go around.

    My CenturyLink C1000Z  (ZyXEL 1000Z) will allow you to disable internet access from the status screen when logged in as administrator.  Other devices may have similar ability.

    Its internet light goes out but it will still provide IP addresses and all the other good things a router does.

    For those caught in the "Update, Bricked, Recovery"  loop, attempting the ShowHide "timing is critical" gambit  this will at least allow them to control the start of the next cycle.

    After you have set up for the next go around, just re enable internet access.

    And as always a word of caution.

    After the modem/gateway disconnect from the internet, Windows looses interested  in it and it will no longer show up in Explorer --> Network.  To easily get back to its webpage, have some utility around like Advanced IP Scanner.

    http://www.advanced-ip-scanner.com/index11.php?utm\_expid=62919999-60.UcBcCTpjTDqJ-vnvKV9\_rw.1

    And thanks again.  That was a good thought about metered connection.  It was a matter of how to get there first.

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