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  1.    22 Sep 2017 #1
    Join Date : Jul 2017
    Posts : 11
    Microsoft Windows 10 Pro 64 Bit

    Reasons for failed automatic device encryption: Un-allowed DMA capable


    Looking through MSINFO32 I see the line:
    Device Encryption Support Reasons for failed automatic device encryption: Un-allowed DMA capable bus/device(s) detected

    What does it mean? My laptop C:\ drive is encrypted the whole thing. Does this mean I have a problem?

    I have these lines too:
    Secure Boot State On
    PCR7 Configuration Bound

    MSINFO32-09-22-2017.txt
      My ComputerSystem Spec
  2.    23 Sep 2017 #2
    Join Date : Jul 2016
    Granite Bay, CA
    Posts : 706
    Windows 10 Professional

    Device encryption in Windows 10 for OEMs | Microsoft Docs

    Scroll down to the section named: "Un-allowed DMA capable bus/device(s) detected".
    See if someone else can help you fill out what you need filled out.
      My ComputerSystem Spec
  3.    23 Sep 2017 #3
    Join Date : Jul 2017
    Posts : 11
    Microsoft Windows 10 Pro 64 Bit
    Thread Starter

    Quote Originally Posted by pepanee View Post
    Device encryption in Windows 10 for OEMs | Microsoft Docs

    Scroll down to the section named: "Un-allowed DMA capable bus/device(s) detected".
    See if someone else can help you fill out what you need filled out.
    Gee, thanks for the info. My Google search results returned crap. Consider that link bookmarked. Doesn't really look like I have too much to worry about. Thanks again.
      My ComputerSystem Spec
  4.    23 Sep 2017 #4
    Join Date : Jul 2016
    Granite Bay, CA
    Posts : 706
    Windows 10 Professional

    Here's a lot of results I found using Bing:

    http://www.bing.com/search?q="Device+Encryption+Support+Reasons+for+failed+automatic+device+encryption"

    You can read through some and see if you can figure out what all that is.
      My ComputerSystem Spec
  5.    09 Oct 2017 #5
    Join Date : Jan 2014
    Posts : 1,391
    Windows 10 Pro (32-bit) 16299.15

    Quote Originally Posted by purplenate26 View Post
    Consider that link bookmarked.
    Annoyingly it seems that page has already had some of the information (such as hardware requirements for device encryption) removed since that post.
      My ComputerSystem Spec
  6.    4 Weeks Ago #6
    Join Date : Nov 2015
    Posts : 195
    Win10

    All I know, is that since version 1703, a new group policy was added to block new DMA devices when the computer is locked. This is for Bitlocker only, donít know about the Home version of device encryption.

    Disable New DMA Devices when Computer is Locked.

    Do a search for it.

    DMA has been an issue for years and finally MS has added a policy for it
      My ComputerSystem Spec
  7.    4 Weeks Ago #7
    Join Date : Jul 2017
    Posts : 11
    Microsoft Windows 10 Pro 64 Bit
    Thread Starter

    Quote Originally Posted by win10freak View Post
    All I know, is that since version 1703, a new group policy was added to block new DMA devices when the computer is locked. This is for Bitlocker only, don’t know about the Home version of device encryption.

    Disable New DMA Devices when Computer is Locked.

    Do a search for it.

    DMA has been an issue for years and finally MS has added a policy for it
    Good to know. I read up on it and now I am satisfied I have a good working knowledge of the issue.
      My ComputerSystem Spec
  8.    4 Weeks Ago #8
    Join Date : Jul 2015
    Nine Mile Falls WA
    Posts : 496
    win 10 pro x64

    guys facing same issue as well have this error in system info and my secure boot is now disabled and stuff any way to fix ?? called ms they just point me to device manufacture , no help at all, the article looks to be removed ??
      My ComputerSystem Spec
  9.    4 Weeks Ago #9
    Join Date : Jul 2017
    Posts : 11
    Microsoft Windows 10 Pro 64 Bit
    Thread Starter

    Quote Originally Posted by Tonyb View Post
    guys facing same issue as well have this error in system info and my secure boot is now disabled and stuff any way to fix ?? called ms they just point me to device manufacture , no help at all, the article looks to be removed ??
    Secure boot disabled because you want it that way or it broke? Maybe open a new thread about secure boot. Secure boot and Device Encryption Support Reasons for failed automatic device encryption: Un-allowed DMA capable bus/device(s) detected are different but related. Sounds like your problem deserves a new thread. You'll get better help for your secure boot issue that way.
      My ComputerSystem Spec
  10.    4 Weeks Ago #10
    Join Date : Jul 2015
    Nine Mile Falls WA
    Posts : 496
    win 10 pro x64

    it broke but is enabled in my bios just not working because of this issue, i have another thread but no possible recourse there, i contacted microsoft who told me it's because of this issue, and i should contact motherboard manufacture i did and they just redirected me to MS again but no go on it.
      My ComputerSystem Spec

 
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