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I am unable to turn on Memory Integrity in Windows due to an incompatible Logitech driver. I no longer even own a Logitech webcam, and this driver has not been updated since 2012 (hence the warning).

lvbflt64.sys

I checked in C:\Windows\System32\Drivers and the file is not there.

I checked Device Manager and the web cam isn't even listed (even when Show Hidden is on).

I do not have any Logitech control panel type software on my machine.

How can I find and remove this driver so that I can turn Memory Integrity back on? Getting highly technical doesn't scare me off, I just want it gone.

Incompatible Logitech Driver

When I search on disk, I see these in the DriverStore. I have tried every trick I can think of to remove these, I can't. They require SYSTEM level permissions to remove manually.

Files on Disk

The reason I'm going through all of this pain is to get rid of the insecure flag that Defender shows in the taskbar. I fully understand what Core Isolation is/does, I am a software engineer.

I just want a clean system and I don't want Logitech drivers from 2012 on my machine when I don't even use Logitech devices. And these drivers are now interfering with system security.

Defender Flag

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  • 2
    what do you get from starting cmd as administrator and running cd \ + enter + dir *lvbflt64* /s /b ? (the last command might take a while, especially if you're not on a SSD)
    – hanshenrik
    Oct 10, 2022 at 13:11
  • @hanshenrik Returns two results within `C:\Windows\System32\DriverStore\FileRepository`
    – Patrick
    Oct 10, 2022 at 13:28
  • Memory integrity is a work in progress that does not work on any of my Windows 11 machines brand new, or older. I do not have any driver incompatibilities on new machines. This is a Microsoft bug and a deeply flawed idea.
    – John
    Oct 10, 2022 at 13:35
  • (1) Check if in the Device Manager you have any Logitech devices and delete them, reboot, and try again. If error, check if the device hasn't returned. (2) If you have any drivers named lv*.sys, rename or move them elsewhere, reboot, and try again.
    – harrymc
    Oct 10, 2022 at 14:50
  • @harrymc Device Manager is clean as I noted, even with Show Hidden. The files are in the Windows DriverStore and I can't remove them (see updated image in post).
    – Patrick
    Oct 10, 2022 at 14:57

2 Answers 2

Reset to default
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In the device manager:

  • Select View → Devices by driver
  • Right click on the driver (in your case oem109.inf)
  • Enable both tick boxes:
    • ✓ Uninstall this driver from any device that currently use it.
    • ✓ Attempt to force remove of this driver while it is still in use by the devices

(reboot the system)

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  • This worked ... learn something new every day! Thanks.
    – Patrick
    Oct 31, 2022 at 19:10
  • This is the unique solution found on entire internet that solves! Thank you a lot!
    – Uder Moreira
    Dec 12, 2022 at 14:53
0

Procedure above is good. Additionally, after step 2 (right-click), select "Properties" and then click the "Remove Driver" box. After that, the two tick boxes are presented.

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