Windows 10: Un-allowed DMA capable bus/devices detected

Discus and support Un-allowed DMA capable bus/devices detected in AntiVirus, Firewalls and System Security to solve the problem; Hallo there! I would like to enable device encryption in Windows 10. However, I see the error in the system information page that un-allowed DMA... Discussion in 'AntiVirus, Firewalls and System Security' started by SaydashMongush, Feb 23, 2021.

  1. Un-allowed DMA capable bus/devices detected


    Hallo there!


    I would like to enable device encryption in Windows 10. However, I see the error in the system information page that un-allowed DMA capable bus/devices have been detected. I do not know what to do. I checked the BIOS and found a possibly relevant setting which is the pre-boot DMA protection which is enabled for all PCI devices. Should I turn it off? Or something else?


    The laptop model is HP Probook 440 G7.


    Thanks.

    :)
     
    SaydashMongush, Feb 23, 2021
    #1

  2. Un-allowed DMA capable bus/device(s) detected

    My problem is how can I find out which device on my laptop is Un-allowed DMA capable. I tried disabling my USB devices and unplugging laptop from docking station. My colleague has same laptop model and he is not having same issue as I do.

    System Information

     
    Kresimir Kljucaric, Feb 23, 2021
    #2
  3. Daniel B Win User
    Un-allowed DMA capable bus/device(s) detected

    Microsoft provides this documentation about this message.

    Both the blacklist and whitelist are in your registry at HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\DmaSecurity. I’m not aware of an automated process to check this, though creating one should be pretty easy.

    A typical candidate that exists on most systems is “PCI-to-PCI Bridge”. Curiously, “PCI Express Root Complex” is both in AllowedBuses and UnallowedBuses.
     
    Daniel B, Feb 23, 2021
    #3
  4. Un-allowed DMA capable bus/devices detected

    Un-allowed DMA capable bus/device(s) detected

    Hello

    My problem is how can I find out which device on my laptop is Un-allowed DMA capable. I tried disabling my USB devices and unplugging laptop from docking station. My colleague has same laptop model and he is not having same issue as I do.

    System Information

    OS Name Microsoft Windows 10 Enterprise

    Version 10.0.16299 Build 16299

    Other OS Description Not Available

    OS Manufacturer Microsoft Corporation

    System Name NB-SOKRE

    System Manufacturer LENOVO

    System Model 20L7S02M00

    System Type x64-based PC

    System SKU LENOVO_MT_20L7_BU_Think_FM_ThinkPad T480s

    Processor Intel(R) Core(TM) i7-8650U CPU @ 1.90GHz, 2112 Mhz, 4 Core(s), 8 Logical Processor(s)

    BIOS Version/Date LENOVO N22ET37W (1.14 ), 22.5.2018.

    SMBIOS Version 3.0

    Embedded Controller Version 1.08

    BIOS Mode UEFI

    BaseBoard Manufacturer LENOVO

    BaseBoard Model Not Available

    BaseBoard Name Base Board

    Platform Role Mobile

    Secure Boot State On

    PCR7 Configuration Bound

    Windows Directory C:\Windows

    System Directory C:\Windows\system32

    Boot Device \Device\HarddiskVolume1

    Locale United States

    Hardware Abstraction Layer Version = "10.0.16299.371"

    User Name 3PRO\kkljucaric

    Time Zone Central European Daylight Time

    Installed Physical Memory (RAM) 16,0 GB

    Total Physical Memory 15,8 GB

    Available Physical Memory 7,02 GB

    Total Virtual Memory 18,2 GB

    Available Virtual Memory 5,31 GB

    Page File Space 2,38 GB

    Page File C:\pagefile.sys

    Virtualization-based security Running

    Virtualization-based security Required Security Properties Base Virtualization Support, Secure Boot, DMA Protection

    Virtualization-based security Available Security Properties Base Virtualization Support, Secure Boot, DMA Protection, Secure Memory Overwrite, UEFI Code Readonly, SMM Security Mitigations 1.0

    Virtualization-based security Services Configured Credential Guard

    Virtualization-based security Services Running Credential Guard

    Windows Defender Device Guard Code Integrity Policy Audit

    Windows Defender Device Guard user mode Code Integrity Audit

    Device Encryption Support Reasons for failed automatic device encryption: Un-allowed DMA capable bus/device(s) detected

    A hypervisor has been detected. Features required for Hyper-V will not be displayed.
     
    Krešimir Ključarić, Feb 23, 2021
    #4
Thema:

Un-allowed DMA capable bus/devices detected

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