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BSOD with lvrs64.sys




  • Official comment
    Balaji P

    Hi Zachary, thanks for reaching out to Logitech. We apologize for delay in response. Kindly share us the product/webcam details you are currently using, so that I can assist you further.

    Thanks for choosing Logitech, have a good day.

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  • Robbert Geers

    I have the same problem for a while now. Probably 1-2 months. Windows 10 with a C525 camera here. I'm mostly using Skype meetings and MS Teams. Very annoying since some workdays are filled with conference calls. Crash occurs several times a week, sometimes a week goes by without SYSTEM_EXCEPTION_NOT_HANDLED BSOD.

    I just tried to find a driver update on this site but all i could find was 'Logitech camera settings' which i now installed. The driver date is still on 22-10-2012 version 13.80.853.0 so it did not update while installing 'Logitech camera settings'.  I'll follow this thread to see if a fix comes up.

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  • Дмитрий Попов

    И у меня такая же проблема.

    После перезагрузки появляется окно.

    Файл %LocalAppData%\Temp\WER-37643-0.sysdata.xml не найден, наверное его CCleaner удалила.

    ссыллка на оба дампа памяти! Annp68pu5y-6wXzqmfNp540gVUAv?e=ms0Art

    анализ дампа памяти грешит на драйвер к веб-камере. Результат анализа:

    Имя файла : lvrs64.sys

    Адрес в стеке : lvrs64.sys+165d

    С адреса : fffff880`024ec000

    По адрес : fffff880`02540000

    Размер : 0x00054000

    Метка времени : 0x505cb9b9

    Строка времени : 21.09.2012 23:02:17

    Название продукта : Logitech Webcam Software

    Описание файла : Logitech Kernel Audio Improvement Filter Driver

    Версия файла : 13.51.823.0

    Компания : Logitech Inc.

    Полный путь : C:\Windows\system32\drivers\lvrs64.sys


    Где нормальный драйвер можно скачать?

    Моя почта

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  • Aleksey Odmen

    Having the same issue with a C270 model.
    Everything is just how Robbert Geers described.
    Waiting for a new driver, which supports latest Windows 10 releases.

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  • Michael B Maxwell

    Similar problem (same driver): SYSTEM_THREAD_EXCEPTION_NOT_HANDLED, "lvrs64.sys failed".  The camera has no identifying information on it (besides the lens info), but Windows Device Manager identifies it as a Logitech Webcam 905.  Oddly, where it shows up under "Audio inputs and outputs" | "Microphone (Webcam 905)", if I right-click and bring up Properties, then on Driver, it tells me "No driver files are required or have been loaded for this device."  If I right click on "Imaging devices" | "Logitech Webcam 905", it has a long list of drivers, but not this one.  So I'm not sure where this driver is used. 

    I found the file, it's under c:\Windows\System32\DriverStore\FileRepository\lpro564s.inf_amd64_cf2e8a5272aa1145\, digital signature dated 22 Oct 2012 10:13, version 13.80.853.0.  I tried the link to Downloads on the website, but I don't see anything there about drivers.  The webcam driver here:

    is virtually the same date as the one I have, but a different (and much lower) version #.

    Why is it so hard to find driver updates on the website?

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  • Zachary Gerber

    I agree that it's odd that Logitech doesn't offer any actual drivers. They have three programs offered on the support page for specific webcams, such as Logitech G Hub, Logitech Capture, and Camera Settings. None of the three update the audio enhancement driver from Logitech.


    Also, I edited the original post with all of my gathered data. Ideally, someone at Logitech can use what I've assembled to prepare a solution :-)

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  • Дмитрий Попов

    Я написал в поддержку об этой проблеме. Вот что мне ответили:

    Хочу Вас информировать о том, что данное устройство является Plug and Play, то есть для его подключения не требуется драйверов, верно конфигурированная ОС сама определит устройство и подготовит его к использованию. По этой причине отдельных драйверов для данного продукта не предлагаются.
    Если данный процесс не происходит и наблюдается синий экран, скорее всего проблема с ОС.
    Можем порекомендовать следующее: 
    - полностью обновить ОС;
    - обновить USB и UVC драйвера на Вашем компьютере.

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  • Robbert Geers

    So far no solution yet.

    For ease of reading a google translate of the Russian post above:

    "Dmitry Popov:

    Пи wrote in support of this problem. What you answered me:

    I would like to inform you that Plug and Play does not support this device, it does not require drivers, faithfully configured OS only determines the device and prepares it to use. For this reason, separate drivers for a given product are not recommended.
    If the current process does not occur and the blue screen is observed, almost all problems with the OS will occur.
    I can recommend the following:
    - fullness of renewal of the OS;
    - Renew USB and UVC drivers on your computer."

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  • Tim Wright

    Same thing happening with my Logitech C920 webcam.

    It's very frustrating. The hardware is excellent, but the driver instability is making it unusable.

    Windbg analysis isn't particularly informative, but including here for completeness. I can supply a MEMORY.DMP if somebody at Logitech would like to investigate.


    0: kd> !analyze -v
    * *
    * Bugcheck Analysis *
    * *

    This is a very common bugcheck. Usually the exception address pinpoints
    the driver/function that caused the problem. Always note this address
    as well as the link date of the driver/image that contains this address.
    Arg1: ffffffffc0000005, The exception code that was not handled
    Arg2: fffff8074ea02fc9, The address that the exception occurred at
    Arg3: ffffc60a4ba6f768, Exception Record Address
    Arg4: ffffc60a4ba6efa0, Context Record Address

    Debugging Details:


    Key : AV.Fault
    Value: Read

    Key : Analysis.CPU.Sec
    Value: 3

    Key : Analysis.DebugAnalysisProvider.CPP
    Value: Create: 8007007e on NEUTRINO

    Key : Analysis.DebugData
    Value: CreateObject

    Key : Analysis.DebugModel
    Value: CreateObject

    Key : Analysis.Elapsed.Sec
    Value: 9

    Key : Analysis.Memory.CommitPeak.Mb
    Value: 75

    Key : Analysis.System
    Value: CreateObject


    BUGCHECK_P1: ffffffffc0000005

    BUGCHECK_P2: fffff8074ea02fc9

    BUGCHECK_P3: ffffc60a4ba6f768

    BUGCHECK_P4: ffffc60a4ba6efa0

    EXCEPTION_RECORD: ffffc60a4ba6f768 -- (.exr 0xffffc60a4ba6f768)
    ExceptionAddress: fffff8074ea02fc9 (lvrs64+0x0000000000002fc9)
    ExceptionCode: c0000005 (Access violation)
    ExceptionFlags: 00000000
    NumberParameters: 2
    Parameter[0]: 0000000000000000
    Parameter[1]: 000002a200af14d4
    Attempt to read from address 000002a200af14d4

    CONTEXT: ffffc60a4ba6efa0 -- (.cxr 0xffffc60a4ba6efa0)
    rax=0000000000000000 rbx=ffffdb08be508a80 rcx=0000000000000001
    rdx=0000000000000000 rsi=0000000000000000 rdi=0000000000000000
    rip=fffff8074ea02fc9 rsp=ffffc60a4ba6f9a0 rbp=000002a200af14b0
    r8=0000000000000000 r9=000002a200af14b0 r10=0000000000000002
    r11=000002a200af14b0 r12=ffffdb08be5098e0 r13=0000000000000000
    r14=000002a200af14b0 r15=0000000000000001
    iopl=0 nv up ei pl zr na po nc
    cs=0010 ss=0000 ds=002b es=002b fs=0053 gs=002b efl=00210246
    fffff807`4ea02fc9 45396924 cmp dword ptr [r9+24h],r13d ds:002b:000002a2`00af14d4=????????
    Resetting default scope

    BLACKBOXBSD: 1 (!blackboxbsd)

    BLACKBOXNTFS: 1 (!blackboxntfs)

    BLACKBOXPNP: 1 (!blackboxpnp)


    PROCESS_NAME: System

    READ_ADDRESS: 000002a200af14d4

    ERROR_CODE: (NTSTATUS) 0xc0000005 - The instruction at 0x%p referenced memory at 0x%p. The memory could not be %s.

    EXCEPTION_CODE_STR: c0000005

    EXCEPTION_PARAMETER1: 0000000000000000

    EXCEPTION_PARAMETER2: 000002a200af14d4

    EXCEPTION_STR: 0xc0000005

    ffffc60a`4ba6f9a0 fffff807`4ea0165d : 00000000`00000000 000002a2`00000002 00000000`00000000 00000000`00000000 : lvrs64+0x2fc9
    ffffc60a`4ba6fa80 fffff807`4ea1093d : ffffdb08`c9877af0 00000000`00000000 000002a2`00af14b0 ffffdb08`c9877b50 : lvrs64+0x165d
    ffffc60a`4ba6fae0 fffff807`51f46735 : ffffdb08`beb8f040 fffff807`00000001 00000000`00000002 ffffdb08`c7e05de0 : lvrs64+0x1093d
    ffffc60a`4ba6fc10 fffff807`51fe51b8 : fffff807`4cc22180 ffffdb08`beb8f040 fffff807`51f466e0 00000000`00000000 : nt!PspSystemThreadStartup+0x55
    ffffc60a`4ba6fc60 00000000`00000000 : ffffc60a`4ba70000 ffffc60a`4ba6a000 00000000`00000000 00000000`00000000 : nt!KiStartSystemThread+0x28

    SYMBOL_NAME: lvrs64+2fc9

    MODULE_NAME: lvrs64

    IMAGE_NAME: lvrs64.sys

    STACK_COMMAND: .cxr 0xffffc60a4ba6efa0 ; kb


    FAILURE_BUCKET_ID: AV_lvrs64!unknown_function

    OS_VERSION: 10.0.19041.1

    BUILDLAB_STR: vb_release


    OSNAME: Windows 10

    FAILURE_ID_HASH: {456b553a-a332-622e-ed6e-0ef1efb881db}

    Followup: MachineOwner

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  • Robbert Geers

    Anybody looking into this?

    There are many similar cases:


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  • Tim Wright

    Well, I found a/the solution.

    So, this driver (which is completely broken/unstable on Windows 10) is not actually necessary. It was installed years ago when this system was still running Windows 7 prior to upgrading to Windows 10.

    The solution is really quite simple:

    • Deinstall all Logitech software (or at least any driver packages).
    • Use Device Manager and remove the lvrs64.sys driver if it was not already removed.
    • Delete/rename any copies of lvrs64.sys on disk (paranoia).
    • Unplug the camera.
    • Plug it back in.
    • Windows will check for and find Windows 10 Microsoft drivers for the camera. Allow it to install them.
    • Optionally re-install the userspace Logitech software for camera control

    Since doing this, my system has been 100% stable, and I spend half my working day in Zoom sessions.

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  • Zachary Gerber

    In my troubleshooting, I found that the Microsoft driver was stable, but I hadn't been able to force computers to use the driver (they would reinstall the faulty lvrs64.sys). You have completed the puzzle! Look at us, fixing Logitech's issues for free.

    Hopefully, future users can easily find this post when they search for the issue.

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  • Дмитрий Попов

    А если просто камеру вынуть из USB – порта, то это поможет?

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  • NH905

    @Tim Wright, thanks for posting these instructions.  Is there a way to only replace lvrs64.sys driver with the comparable Microsoft driver?  I first uninstalled the Logitech Motion Detection and Webcam Drivers components.  Even without unplugging/replugging the C905 camera, Microsoft installed its video and audio drivers.  I lost the ability to shift the image and zoom in through the Webcam Controller.  I found one reference that the Microsoft Camera app had zoom capabilities but it does not show up on my system even after uninstalling the Logitech Webcam Software.

    I am not sure what "userspace Logitech software for camera control" refers to.  I installed Logitech Camera Setting 2.12.8 which suggests I can zoom and shift the image but those controls do nothing (I can adjust brightness/color intensity).

    I may need to invest in a 'green screen' (:-).

    Thanks, Norbert 

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  • Aleksey Odmen

    Yes here is.

    To set the microsoft driver up you need not much than uninstall your microphone device in Device Manager with the check box "Delete driver software for this device" (or somth like that) being pressed.

    Unplug and plug in your camera. Microsoft drivers will be installed.

    Later, windows will install faulty drivers again, but you just press "Roll Back Driver" after lvrs64.sys set up (Indicator is the microphone device name in device manager being the webcam model) and windows would never install them again.

    No need in delition of any other logitech software products.

    Works for me just fine, haven't seen lvrs64.sys bluescreens in a months

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  • NH905

    @Aleksey Odmen, I am having trouble following your instructions.  In Device Manager on Windows 10 Home, I see "Microphone (Webcam 905)" under "Audio inputs and outputs" but it shows no driver details (the lvrs64.sys driver shows up under "Webcam 905" in "Sound, video and game controllers").  Uninstalled "Microphone (Webcam 905)" does not provide an option to delete driver software.  Unplugging/replugging the camera restores "Microphone (Webcam 905)"

    If I go through Sounds and select the Microphone properties for the Webcam 905, I end up at the driver list for the webcam that includes both the video and audio support.  I haven't figured out a way to replace just the lvrs64.sys driver with the Microsoft audio driver.  

    Thanks, Norbert

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  • Дмитрий Попов

    @Aleksey Odmen,

    У меня клавиша «откатить» не активна. И вообще в диспетчере устройств веб-камера на двух устройствах есть.

    [url=][img][/img][/url]  [url=][img][/img][/url] 


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  • aaaaaaaaaa

    I was able to figure out how to switch to the windows drivers so hopefully this helps others whom come across this on a google search. This is on Windows 10.

    First you need to uninstall the device. The trick here is to uninstall it from "Sound, video and game controllers" not the USB device itself. That's what tripped me up in the previous solutions.

    You can verify this is working as your webcam video should still work but it doesnt show up as an audio device. Its important that you check the checkbox to remove drivers when it comes up.

    Then unplug and replug in your webcam and it should install the windows drivers. You can double check this by opening the device in "Sound Video and game controllers" and making sure Microsoft is the provider. You can then click on "Driver Details" to make sure lvrs64.sys is no longer there

    If this doesnt work for you and the logitech drivers get reinstalled you can try this:

    • Disable the webcam device in device manager under "Sound, video and game controllers"
    • Navigate to C:\Windows\system32\drivers and manually delete lvrs64.sys driver. IMPORTANT: only delete this driver or your computer could stop working. It should ask you to confirm and the publisher should say something like Logitech Audio Driver. You may also need to change permissions on the file to get you to delete it.
    • Go back to device manager and enable the device, you should get an error saying there are issues with this device (this is due to the driver you just deleted)
    • Now uninstall the device in device manager, unplug it and replug it

    I'm not sure all of this is necessary, but its what I did while debugging the issue so I wanted to include it.

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  • Дмитрий Попов

    Получилось только вторым способом вручную драйвер lvrs64.sys удалить. Камера работает.

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