Memory Integrity issue with btwusb.sys after update


imacken

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I updated to 22622.575 and I now have a Windows Security warning about not being able to turn on Memory Integrity because of incompatible btwusb.sys drivers.
Is this normal behaviour on this beta build?
 

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Bree

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not being able to turn on Memory Integrity because of incompatible btwusb.sys drivers.
Is this normal behaviour on this beta build?
Yes, it's normal on any build of Windows 11 or any build of Windows 10 since it got Core Isolation features added. The btwusb.sys drive is known to be incompatible with Memory Integrity. Either uninstall it, or don't try to turn on Memory Integrity.

 

My Computers

System One System Two

  • OS
    Windows 11 Home
    Computer type
    Laptop
    Manufacturer/Model
    Acer Aspire 3 A315-23
    CPU
    AMD Athlon Silver 3050U
    Memory
    8GB
    Graphics Card(s)
    Radeon Graphics
    Monitor(s) Displays
    laptop screen
    Screen Resolution
    1366x768 native resolution, up to 2560x1440 with Radeon Virtual Super Resolution
    Hard Drives
    1TB Samsung EVO 870 SSD
    Browser
    Edge, Firefox
    Antivirus
    Defender
    Other Info
    fully 'Windows 11 ready' laptop. Windows 10 C: partition migrated from my old unsupported 'main machine' then upgraded to 11. A test migration ran Insider builds for 2 months. When 11 was released on 5th October it was re-imaged back to 10 and was offered the upgrade in Windows Update on 20th October. Windows Update offered the 22H2 Feature Update on 20th September 2022.

    My SYSTEM THREE is a Dell Latitude 5410, i7-10610U, 32GB RAM, 512GB ssd, Windows 11 Pro.

    My SYSTEM FOUR is a 2-in-1 convertible Lenovo Yoga 11e 20DA, Celeron N2930, 4GB RAM, 128GB ssd. Unsupported device: currently running Win10 Pro, plus Win11 Pro 22H2 RTM as a native boot vhdx.
  • Operating System
    Windows 11 Pro
    Computer type
    Laptop
    Manufacturer/Model
    Dell Lattitude E4310
    CPU
    i5 M 520
    Motherboard
    0T6M8G
    Memory
    4GB
    Screen Resolution
    1366x768
    Hard Drives
    500GB HDD
    Browser
    Firefox, Edge
    Antivirus
    Defender
    Other Info
    unsupported machine: Legacy bios, MBR, TPM 1.2, upgraded from W10 to W11 using W10/W11 hybrid install media workaround. In-place upgrade to 22H2 using ISO and a workaround.

    My SYSTEM THREE is a Dell Latitude 5410, i7-10610U, 32GB RAM, 512GB ssd, Windows 11 Pro.

    My SYSTEM FOUR is a 2-in-1 convertible Lenovo Yoga 11e 20DA, Celeron N2930, 4GB RAM, 128GB ssd. Unsupported device: currently running Win10 Pro, plus Win11 Pro 22H2 RTM as a native boot vhdx.

imacken

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Thanks for that. Do I need btwusb.sys? Is it an MS driver?
 

My Computer

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  • OS
    Windows 11
    Computer type
    PC/Desktop
    CPU
    i7 12700K
    Motherboard
    ASUS ROG STRYX Z690-A Gaming Wi-Fi D4
    Memory
    32Gb
    Graphics Card(s)
    MSI RTX 3090 Gaming X Trio
    Sound Card
    Sound Blaster Z
    Monitor(s) Displays
    ACER Predator XB321HK
    Screen Resolution
    4K
    PSU
    Corsair 850W

bobkn

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Did you have core isolation (memory integrity) enabled on any previous version of 11 (or Windows 10) with that driver present?

My guess: no. It's just a guess, though.

You may have trouble getting rid of such a driver, as a copy may be retained in the driver store repository. One way to do that is using DriverStore Explorer. It isn't especially user friendly, in my opinion.
 
Last edited:

My Computers

System One System Two

  • OS
    Windows 11 22621.598
    Computer type
    PC/Desktop
    Manufacturer/Model
    homebuilt
    CPU
    Intel I9-12900K
    Motherboard
    Asus RoG Strix Z690-E
    Memory
    64GB Kingston DDR5-5600
    Graphics Card(s)
    Gigabyte RTX 3090 ti
    Sound Card
    none (USB to speakers), Realtek
    Monitor(s) Displays
    Viewsonic XG320U
    Screen Resolution
    3840 X 2160 @ 144Hz
    Hard Drives
    WB Black SN850 1TB M.2 NVME SSD
    Seagate Iron Wolf 8TB
    PSU
    eVGA SuperNOVA 1300 GT
    Case
    Corsair 5000D AIrflow
    Cooling
    Corsair iCUE H150i ELITE CAPELLIX Liquid CPU Cooler
    Keyboard
    Logitech K120 (wired)
    Mouse
    Logitech M500s (wired)
    Internet Speed
    1200 Mbps
  • Operating System
    windows 11 22621.598
    Computer type
    PC/Desktop
    Manufacturer/Model
    homebuilt
    CPU
    Ryzen 9 5950X
    Motherboard
    Asus Tuf Gaming X570-Plus
    Memory
    64GB DDR4 3800 (@ 3600)
    Graphics card(s)
    Zotac RTX 3080
    Sound Card
    built in Realtek
    Monitor(s) Displays
    Asus PA329C
    Screen Resolution
    3840 X 2160
    Hard Drives
    Sabrent 1 TB PCI-E 4.0 X4 NVME M.2
    4 GB Seagate Ironwolf
    PSU
    eVGA SuperNOVA 850 G6
    Case
    Phanteks ENTHOO Pro M
    Cooling
    iCUE H115i RGB PRO XT Liquid CPU Cooler
    Mouse
    Logitech M500s (wired)
    Keyboard
    Logitech K120 (wired)

imacken

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I'm not sure, but I am sure that I didn't get the Windows Security yellow exclamation mark in the notification tray previously.
 

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System One

  • OS
    Windows 11
    Computer type
    PC/Desktop
    CPU
    i7 12700K
    Motherboard
    ASUS ROG STRYX Z690-A Gaming Wi-Fi D4
    Memory
    32Gb
    Graphics Card(s)
    MSI RTX 3090 Gaming X Trio
    Sound Card
    Sound Blaster Z
    Monitor(s) Displays
    ACER Predator XB321HK
    Screen Resolution
    4K
    PSU
    Corsair 850W

Bree

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I'm not sure, but I am sure that I didn't get the Windows Security yellow exclamation mark in the notification tray previously.
It's likely that Memory Integrity was off before, and that the upgrade to this build tried to tun it on. It's supposed to be on by default in a clean install of Windows 11, unlike Windows 10 which has the same core isolation features, but it's off by default.
 

My Computers

System One System Two

  • OS
    Windows 11 Home
    Computer type
    Laptop
    Manufacturer/Model
    Acer Aspire 3 A315-23
    CPU
    AMD Athlon Silver 3050U
    Memory
    8GB
    Graphics Card(s)
    Radeon Graphics
    Monitor(s) Displays
    laptop screen
    Screen Resolution
    1366x768 native resolution, up to 2560x1440 with Radeon Virtual Super Resolution
    Hard Drives
    1TB Samsung EVO 870 SSD
    Browser
    Edge, Firefox
    Antivirus
    Defender
    Other Info
    fully 'Windows 11 ready' laptop. Windows 10 C: partition migrated from my old unsupported 'main machine' then upgraded to 11. A test migration ran Insider builds for 2 months. When 11 was released on 5th October it was re-imaged back to 10 and was offered the upgrade in Windows Update on 20th October. Windows Update offered the 22H2 Feature Update on 20th September 2022.

    My SYSTEM THREE is a Dell Latitude 5410, i7-10610U, 32GB RAM, 512GB ssd, Windows 11 Pro.

    My SYSTEM FOUR is a 2-in-1 convertible Lenovo Yoga 11e 20DA, Celeron N2930, 4GB RAM, 128GB ssd. Unsupported device: currently running Win10 Pro, plus Win11 Pro 22H2 RTM as a native boot vhdx.
  • Operating System
    Windows 11 Pro
    Computer type
    Laptop
    Manufacturer/Model
    Dell Lattitude E4310
    CPU
    i5 M 520
    Motherboard
    0T6M8G
    Memory
    4GB
    Screen Resolution
    1366x768
    Hard Drives
    500GB HDD
    Browser
    Firefox, Edge
    Antivirus
    Defender
    Other Info
    unsupported machine: Legacy bios, MBR, TPM 1.2, upgraded from W10 to W11 using W10/W11 hybrid install media workaround. In-place upgrade to 22H2 using ISO and a workaround.

    My SYSTEM THREE is a Dell Latitude 5410, i7-10610U, 32GB RAM, 512GB ssd, Windows 11 Pro.

    My SYSTEM FOUR is a 2-in-1 convertible Lenovo Yoga 11e 20DA, Celeron N2930, 4GB RAM, 128GB ssd. Unsupported device: currently running Win10 Pro, plus Win11 Pro 22H2 RTM as a native boot vhdx.

imacken

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Ah OK, thanks. So, is this btwusb.sys file in any way important, or is it safe to remove it?
 

My Computer

System One

  • OS
    Windows 11
    Computer type
    PC/Desktop
    CPU
    i7 12700K
    Motherboard
    ASUS ROG STRYX Z690-A Gaming Wi-Fi D4
    Memory
    32Gb
    Graphics Card(s)
    MSI RTX 3090 Gaming X Trio
    Sound Card
    Sound Blaster Z
    Monitor(s) Displays
    ACER Predator XB321HK
    Screen Resolution
    4K
    PSU
    Corsair 850W

bobkn

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It's a Bluetooth driver. Do you need it?
 

My Computers

System One System Two

  • OS
    Windows 11 22621.598
    Computer type
    PC/Desktop
    Manufacturer/Model
    homebuilt
    CPU
    Intel I9-12900K
    Motherboard
    Asus RoG Strix Z690-E
    Memory
    64GB Kingston DDR5-5600
    Graphics Card(s)
    Gigabyte RTX 3090 ti
    Sound Card
    none (USB to speakers), Realtek
    Monitor(s) Displays
    Viewsonic XG320U
    Screen Resolution
    3840 X 2160 @ 144Hz
    Hard Drives
    WB Black SN850 1TB M.2 NVME SSD
    Seagate Iron Wolf 8TB
    PSU
    eVGA SuperNOVA 1300 GT
    Case
    Corsair 5000D AIrflow
    Cooling
    Corsair iCUE H150i ELITE CAPELLIX Liquid CPU Cooler
    Keyboard
    Logitech K120 (wired)
    Mouse
    Logitech M500s (wired)
    Internet Speed
    1200 Mbps
  • Operating System
    windows 11 22621.598
    Computer type
    PC/Desktop
    Manufacturer/Model
    homebuilt
    CPU
    Ryzen 9 5950X
    Motherboard
    Asus Tuf Gaming X570-Plus
    Memory
    64GB DDR4 3800 (@ 3600)
    Graphics card(s)
    Zotac RTX 3080
    Sound Card
    built in Realtek
    Monitor(s) Displays
    Asus PA329C
    Screen Resolution
    3840 X 2160
    Hard Drives
    Sabrent 1 TB PCI-E 4.0 X4 NVME M.2
    4 GB Seagate Ironwolf
    PSU
    eVGA SuperNOVA 850 G6
    Case
    Phanteks ENTHOO Pro M
    Cooling
    iCUE H115i RGB PRO XT Liquid CPU Cooler
    Mouse
    Logitech M500s (wired)
    Keyboard
    Logitech K120 (wired)

imacken

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Yep, I need BT. I just checked Device Manager. It looks like my Vive Pro 2 VR headset uses it.
Why has this issue not been resolved if it has been known for a number of years now?
 

My Computer

System One

  • OS
    Windows 11
    Computer type
    PC/Desktop
    CPU
    i7 12700K
    Motherboard
    ASUS ROG STRYX Z690-A Gaming Wi-Fi D4
    Memory
    32Gb
    Graphics Card(s)
    MSI RTX 3090 Gaming X Trio
    Sound Card
    Sound Blaster Z
    Monitor(s) Displays
    ACER Predator XB321HK
    Screen Resolution
    4K
    PSU
    Corsair 850W

Bree

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Why has this issue not been resolved if it has been known for a number of years now?
The only way to resolve the issue it to update to a compatible driver.

Yes, it has been known about for years. It is the OEM's responsibility to update their drivers to be compatible. Some are end-of-life (my older Intel display drivers, for example) and will never be updated. Other OEMs may have been slow to respond.

1661112446380.png
answers.microsoft.com | Unable to TURN ON memory integrity due to incompatible INTEL HD Graphic 4000 drivers/URL]
 

My Computers

System One System Two

  • OS
    Windows 11 Home
    Computer type
    Laptop
    Manufacturer/Model
    Acer Aspire 3 A315-23
    CPU
    AMD Athlon Silver 3050U
    Memory
    8GB
    Graphics Card(s)
    Radeon Graphics
    Monitor(s) Displays
    laptop screen
    Screen Resolution
    1366x768 native resolution, up to 2560x1440 with Radeon Virtual Super Resolution
    Hard Drives
    1TB Samsung EVO 870 SSD
    Browser
    Edge, Firefox
    Antivirus
    Defender
    Other Info
    fully 'Windows 11 ready' laptop. Windows 10 C: partition migrated from my old unsupported 'main machine' then upgraded to 11. A test migration ran Insider builds for 2 months. When 11 was released on 5th October it was re-imaged back to 10 and was offered the upgrade in Windows Update on 20th October. Windows Update offered the 22H2 Feature Update on 20th September 2022.

    My SYSTEM THREE is a Dell Latitude 5410, i7-10610U, 32GB RAM, 512GB ssd, Windows 11 Pro.

    My SYSTEM FOUR is a 2-in-1 convertible Lenovo Yoga 11e 20DA, Celeron N2930, 4GB RAM, 128GB ssd. Unsupported device: currently running Win10 Pro, plus Win11 Pro 22H2 RTM as a native boot vhdx.
  • Operating System
    Windows 11 Pro
    Computer type
    Laptop
    Manufacturer/Model
    Dell Lattitude E4310
    CPU
    i5 M 520
    Motherboard
    0T6M8G
    Memory
    4GB
    Screen Resolution
    1366x768
    Hard Drives
    500GB HDD
    Browser
    Firefox, Edge
    Antivirus
    Defender
    Other Info
    unsupported machine: Legacy bios, MBR, TPM 1.2, upgraded from W10 to W11 using W10/W11 hybrid install media workaround. In-place upgrade to 22H2 using ISO and a workaround.

    My SYSTEM THREE is a Dell Latitude 5410, i7-10610U, 32GB RAM, 512GB ssd, Windows 11 Pro.

    My SYSTEM FOUR is a 2-in-1 convertible Lenovo Yoga 11e 20DA, Celeron N2930, 4GB RAM, 128GB ssd. Unsupported device: currently running Win10 Pro, plus Win11 Pro 22H2 RTM as a native boot vhdx.

imacken

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Thread Starter
Local time
12:32 AM
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90
OS
Windows 11
OK, thanks a lot for all your help guys. I guess I'm stuck with not being able to turn on Memory Integrity.
 

My Computer

System One

  • OS
    Windows 11
    Computer type
    PC/Desktop
    CPU
    i7 12700K
    Motherboard
    ASUS ROG STRYX Z690-A Gaming Wi-Fi D4
    Memory
    32Gb
    Graphics Card(s)
    MSI RTX 3090 Gaming X Trio
    Sound Card
    Sound Blaster Z
    Monitor(s) Displays
    ACER Predator XB321HK
    Screen Resolution
    4K
    PSU
    Corsair 850W

Bree

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I guess I'm stuck with not being able to turn on Memory Integrity.
I turn it on wherever possible, but I have a few machines where it is not. See if you think the extra protection it provides is essential enough to do without your OEM Bluetooth driver. You may find the Microsoft drivers are sufficient. In my case the Microsoft Basic Display Adapter isn't, so I leave Memory Integrity turned off on that machine.

Core Isolation and Memory Integrity have been available for all in Windows 10 since 2018, before that it was only available in the Enterprise editions. This How-To Geek article is a good introduction to what extra protection it provides.

 

My Computers

System One System Two

  • OS
    Windows 11 Home
    Computer type
    Laptop
    Manufacturer/Model
    Acer Aspire 3 A315-23
    CPU
    AMD Athlon Silver 3050U
    Memory
    8GB
    Graphics Card(s)
    Radeon Graphics
    Monitor(s) Displays
    laptop screen
    Screen Resolution
    1366x768 native resolution, up to 2560x1440 with Radeon Virtual Super Resolution
    Hard Drives
    1TB Samsung EVO 870 SSD
    Browser
    Edge, Firefox
    Antivirus
    Defender
    Other Info
    fully 'Windows 11 ready' laptop. Windows 10 C: partition migrated from my old unsupported 'main machine' then upgraded to 11. A test migration ran Insider builds for 2 months. When 11 was released on 5th October it was re-imaged back to 10 and was offered the upgrade in Windows Update on 20th October. Windows Update offered the 22H2 Feature Update on 20th September 2022.

    My SYSTEM THREE is a Dell Latitude 5410, i7-10610U, 32GB RAM, 512GB ssd, Windows 11 Pro.

    My SYSTEM FOUR is a 2-in-1 convertible Lenovo Yoga 11e 20DA, Celeron N2930, 4GB RAM, 128GB ssd. Unsupported device: currently running Win10 Pro, plus Win11 Pro 22H2 RTM as a native boot vhdx.
  • Operating System
    Windows 11 Pro
    Computer type
    Laptop
    Manufacturer/Model
    Dell Lattitude E4310
    CPU
    i5 M 520
    Motherboard
    0T6M8G
    Memory
    4GB
    Screen Resolution
    1366x768
    Hard Drives
    500GB HDD
    Browser
    Firefox, Edge
    Antivirus
    Defender
    Other Info
    unsupported machine: Legacy bios, MBR, TPM 1.2, upgraded from W10 to W11 using W10/W11 hybrid install media workaround. In-place upgrade to 22H2 using ISO and a workaround.

    My SYSTEM THREE is a Dell Latitude 5410, i7-10610U, 32GB RAM, 512GB ssd, Windows 11 Pro.

    My SYSTEM FOUR is a 2-in-1 convertible Lenovo Yoga 11e 20DA, Celeron N2930, 4GB RAM, 128GB ssd. Unsupported device: currently running Win10 Pro, plus Win11 Pro 22H2 RTM as a native boot vhdx.
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