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MS agrees KB2919355 fails on 32bit Win 8.1 on 64bit laptop

  1. #1


    Posts : 40
    Win 8.1

    MS agrees KB2919355 fails on 32bit Win 8.1 on 64bit laptop


    Hi, Basic question: could there be an incompatibility with 32 bit Win 8.1 on a 64 bit PC not apparent until the latest update?

    I've just had an astonishing chat with MS Answer Desk. Win 8.1 was running fine on my 5 year old HP laptop until the latest update. Many desktop features stopped working/explorer crashed after installing the large KB2919355 (win 8.1 update 1).

    The MS agent claimed this was because I was running a 32 bit Win 8 on my 64bit architecture laptop, and 'should have followed procedure'. (What procedure- where?) I had installed this from an ISO file downloaded on this laptop running 32 bit Win 7. He stated downloading the (Win 8) OS would adapt to the environment it was downloaded on. That is, to get a Win 8 compatible with this architecture, I'd have to download it on a 64 bit machine with 64 bit OS!

    Now Win 8/8.1 (32 bits) has not complained about being installed on my laptop. And Vista and Win 7 32 bit have been fine.. well, Win 7 until an odd problem with IE11.

    Is this agent completely mistaken, or is there a bug in this KB running on my laptop?

    I've tried the update twice, once via normal Windows Update, then manually in the correct sequence to identify which update => problem.

    If he's right, many programs I have wouldn't work on a 64 bit OS.

    And if he's right, there's a major oversight in Win 8 not detecting it shouldn't be installed as 32 bits on 64 bit architecture.

    Hope you can help.. thanks!

      My System SpecsSystem Spec

  2. #2


    Sydney, Nova Scotia, Canada
    Posts : 6,490
    Windows 10 Education 64 Bit


    I don't buy it. Try and find a 32 bit only x86 processor? When you do, ask yourself if you'd want to install Windows 8 on that old of a computer. The part about "to get the 64 bit download the PC you download on has to be running a 64 bit OS" is true. Both AMD and Intel "64 bit processors" have the x86 32 bit instruction set so they are 32 bit compatible. Update 1 comes in 64 bit and 32 bit. The 64 bit version would not install on a 32 bit system.
      My System SpecsSystem Spec

  3. #3


    Posts : 40
    Win 8.1


    Hi, thanks, tried again with a different agent- he didn't suggest running a 32bit OS on a 64 bit processor would be a problem. He suggested creating another user, admin rights, turn off my AV. Hmm. Well, I did, wasted another couple of hours.. same symptoms.

    I found one similar sounding report on an MS forum - explorer crashing, taskbar unresponsive after KB2919355
      My System SpecsSystem Spec

  4. #4


    The MS agent claimed this was because I was running a 32 bit Win 8 on my 64bit architecture laptop, and 'should have followed procedure'.
    Wow! support misguiding customers? is just not even funny... I'm astounded!
      My System SpecsSystem Spec

  5. #5


    Posts : 376
    W8.1, W7


    Try and find a 32 bit only x86 processor
    You just found one (my ol' atom netbook, 8.1.1)
    Attached Thumbnails Attached Thumbnails 311.png  
      My System SpecsSystem Spec

  6. #6


    Sydney, Nova Scotia, Canada
    Posts : 6,490
    Windows 10 Education 64 Bit


    Quote Originally Posted by 4wd View Post
    Try and find a 32 bit only x86 processor
    You just found one (my ol' atom netbook, 8.1.1)
    Yeah they are out there. The point I was trying to make was you don't have to have a 32 bit only processor to run a 32 bit version of Windows. But I'm sure you knew that.
      My System SpecsSystem Spec

  7. #7


    Posts : 376
    W8.1, W7


    ^^^ Yes, was just an offtopic anecdote.

    btw, posting this using the compaq 311c, all good with 8.1.1, am regularly amazed by MS maintaining compatibility with (99% of) any old equipment, over so many years.
      My System SpecsSystem Spec

  8. #8


    Posts : 40
    Win 8.1


    Hi, thanks, well, it does install ok, but only if I restore an earlier image. There's nothing blindingly obvious that should conflict. What I have noticed is that after installing it, Safe Mode may not be available. In particular (although it's a bit strange) for the first time invoking Safe Mode from Safe Mode (repeating SHIFT Restart from the Charms Bar/PC Options/Power).

    I tried again with MS Answer Desk- none of the others suggested a 'system incompatibility' (the first guy even drew a red line under 64bit in the system info page!). There isn't a pattern of reported failures of KB2919355 (yet!).

    Just about to try again, having restored the image, checked sfc /scannow.
      My System SpecsSystem Spec

  9. #9


    Posts : 376
    W8.1, W7


    Hello, I see you got amd athlon, maybe it got some problems related to 32bit as well as the known 64bit problems > New Windows 8.1 requirements strand some users on Windows 8 | PCWorld

    If this is the case, probably no solution apart from going back to plain 8 (to be able to receive future security updates), or install w7.
      My System SpecsSystem Spec

  10. #10


    Posts : 40
    Win 8.1


    Thanks 4wd.. yes, Athlon X2 QL-62 dual core. Worrying trend in that article. However

    "The CMPXCHG16b requirement only applies to the 64-bit installation of Windows 8.1; the 32-bit version should work just fine on your machine."

    Also, it seems there would be an error message from Win 8.1 if it was incompatible-

    - and I'm running the 32 bit version of Win 8.1.

    Searching "athlon processor Windows 8.1" is revealing.
    Windows 8.1 CPU list meet system requirements for Windows 8.1
    - a table of compatible processors- indicating mine should be ok.

    Microsoft confirms some older AMD processors do not support Windows 8.1 - Neowin
    SOLVED: Windows 8.1 Will Not Install on Older AMD CPU?s like Athlon 64 and Opterton - Up & Running Technologies Calgary

    What I have found is Safe Mode is fragile. (More below)

    However, I'm wasting a dreadful amount of time, as, having installed a a good many desktop programs and got Thunderbird, Favourites etc etc configured, I found Safe Mode wouldn't work reliably. So back to an earlier image yet again. I now do small changes, take a differential partition image, test Safe Mode by 1. SHIFT restart to safe mode, then 2. In Safe Mode repeat that.

    Ridiculous? It was suddenly finding Safe Mode no longer worked reliably that forced me to lose several days of installing and configuring on and off.

    And then there's KB2919355- which will install if I use an earlier image. I'm about to try again, having confirmed sfc /scannow, Safe Mode are ok.

    Safe Mode
    What happens to Safe Mode when it doesn't work? On restart from Safe Mode I get a Win 8 blue screen 'Something has gone wrong...' and an attempt to restart. It tries.. and after a few seconds- 'click' and the PC powers off.

    It seems as if once I've experienced Safe Mode failing, attempting to enter it fails.

    And I've now seen that a few times.
      My System SpecsSystem Spec

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MS agrees KB2919355 fails on 32bit Win 8.1 on 64bit laptop
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