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Anyone else seeing BSOD issues in cldflt.sys after installing KB4517389

Anonymous
2019-10-12T12:24:49+00:00

On my laptop machine (but not on my desktop) I started getting BSOD failures in cldflt.sys after installing KB4517389. Symptoms basically the same as those reported in

https://answers.microsoft.com/en-us/windows/forum/all/onedrives-cldfltsys-causing-ntfssys-bsod/d2ef7f16-9e45-406f-95ca-6e595271e6d9?page=1

Uninstalling KB4517389 fixes the problem. Presumably, disabling cldflt.sys would do so, too, but I haven't tried that yet.

Windows for home | Windows 10 | Devices and drivers

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  1. Anonymous
    2019-10-12T13:00:02+00:00

    Hi WalterFarrell

    Greetings! I am Vijay, an Independent Advisor. cldflt.sys is a Windows component, hence it is not the root cause. To identify root cause, I need to analyze minidumps generated by crashes with WinDBG. WinDBG is the only tool which can do end to end complete analysis of ..dmp files generated by BSOD (Blue screen of death).

    Go to C:\Windows\Minidump

    Zip the contents of the folder corresponding to date and time of your crashes.

    Upload the content to Onedrive or any other file sharing site for me to locate the problem.

    If you don't get minidump files in above folder, you will need to enable minidump generation. If you need help to generate Minidump - http://answers.microsoft.com/en-us/windows/wiki...

    HOW TO UPLOAD TO ONEDRIVE

    1. Login to https://onedrive.live.com/ utilizing the same Login ID and Password which you have used on this forum. (or use the installed Onedrive on your computer)
    2. Click Upload in the top OR drag and drop the file here.
    3. After uploading, right click the file and choose share.
    4. Click Copy Link.
    5. Copy the link and paste the link here.
    1 person found this answer helpful.
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  2. Anonymous
    2019-10-12T13:27:01+00:00

    I am not seeing a problem but I don't know what the file is for.  I can say, the version I have appears to have been installed by KB4517211.

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  3. Anonymous
    2019-10-12T13:39:11+00:00

    Thanks, Vijay.

    Here's the minidump: https://1drv.ms/u/s!AvgPdPZisZN3hx\_tlalT-vlQJqpE

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  4. Anonymous
    2019-10-12T19:28:52+00:00

    Thanks, Saltgrass.

    The prior version of the file (installed last month) works fine. The version installed with KB4517389 fails for me on the one system (but works on the other). That file, from what I've read, is for cloud support, and specifically for OneDrive support, I think.

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  5. Anonymous
    2019-10-13T06:49:49+00:00

    A. Analysis Results

    File Name: 101219-10000-01.dmp

    SYSTEM_SERVICE_EXCEPTION (3b)

    IMAGE_NAME: cldflt.sys

    *** WARNING: Unable to verify timestamp for dump_iaStor.sys

    B. Third Party Drivers

    dump_iaStor.sys - Intel RST Driver

    Driver date - Wed Nov 30 09:09:19 2011

    C. Recommendations

    a. Create a system restore point first so that if something wrong happens you can revert.

    Type restore point in Cortana Search > Create a Restore point > Check whether against your drive, Protection is ON or not. If not ON, click Configure button below to Make it ON > Now press Create to create a restore point

    b. Download latest driver Intel RST driver from and install https://downloadcenter.intel.com/download/27984...

    Download SetupRST.exe

    Disclaimer - This is a non-Microsoft website. The page appears to be providing accurate, safe information. Watch out for ads on the site that may advertise products frequently classified as a PUP (Potentially Unwanted Products). Thoroughly research any product advertised on the site before you decide to download and install it.

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