My UMBus Enumerator is showing up as an unknown device with no driver


  1. Xii
    Posts : 3
    Windows 10 Educational ( Free professional)
       #1

    My UMBus Enumerator is showing up as an unknown device with no driver


    just noticed it in device manager, I tried searching autocratically for driver software
    here is its instance path:
    TS_USB_HUB_ENUMERATOR\UMB\2&30D3618&1&TS_USB_HUB

    I saw an old post on wn7 forums suggesting to check for these 3 files:

    C:\Windows\inf\umbus.inf
    C:\Windows\inf\umbus.pnf
    C:\Windows\System32\drivers\umbus.sys

    the first 2 are there but the last one is not, not sure if its meant to be in win10 though

    any idea where I can find a driver for it and where I can find a copy of that file if I need it?

    windows 10 build is build 18363.295
    Thanks :)
      My Computer

  2. Try3's Avatar
    Posts : 7,482
    Windows 10 Home x64 Version 20H2 Build 19042.928
       #2

    Search for drivers by HardwareID


    1 Search the maker's website for a driver. If there is no Windows 10 driver then you could try whatever their latest one is.
    1.1 Try your computer maker for drivers first if the hardware was part of the computer when you bought it.
    1.2 If the hardware was bought separately then try the hardware maker's website.

    2 Do check that you have exhausted Device manager's capabilities -
    2.1 Try the Device manager, Scan for hardware changes icon {Windows should have done this automatically for you anyway}. You can also run it by -
    Device manager,
    click in a blank area,
    Action,
    Scan for hardware changes.
    2.2 Try the Device manager, Install legacy hardware procedure
    Device manager,
    click in a blank area,
    Action,
    Install legacy hardware,
    Next,
    Install the hardware that I manually select from a list.



    3 If none of this has resolved the matter then searchng for drivers using the HardwareID is worthwhile -

    You can apply this method to any Device manager entry including, but not limited to,
    - any entry with a warning triangle,
    - any entry called Unknown device, and
    - any entry within the Other devices group [if this group exists, it is a euphemism for 'No driver installed'].
    My UMBus Enumerator is showing up as an unknown device with no driver-device-manager-warning-signs-icons-other-devices.png


    Go to
    Device manager,
    [whichever section it is in],
    The device in question,
    double-click on it [or right-click, Properties],
    Details tab,
    Property - Hardware IDs {in the dropdown list},
    click on one of them & press ctrl+A to select them all,
    right-click, Copy
    then paste them into any text file so you can keep the data.

    You can then search online for the part of the HardwareID that is common to all the entries. So for this example set I'd search for the bits in bold
    PCI\VEN_8086&DEV_9D03&SUBSYS_07441028&REV_21
    PCI\VEN_8086&DEV_9D03&SUBSYS_07441028
    PCI\VEN_8086&DEV_9D03&CC_010601
    PCI\VEN_8086&DEV_9D03&CC_0106

    Before searching more generally, search in the MS update catalog At least then you would get a driver from a reliable source.

    If the problem is not resolved already then search more generally on the web.
    - You might find that additional info you can get from the search results is enough to send you back to the computer / hardware maker or the MSUpdateCatalog to get better results there.
    - Your search results might have identified a previously unknown hardware maker's name in which case you could try their website. But do bear in mind that computer maker's can customise drivers to suit eccentricities of their hardware / configuration in which case original hardware maker's standard drivers might no longer work correctly.
    - If you cannot find anything by the computer / hardware maker or MS then you might find that you are faced with giving up or with deciding to trust an unknown website as a source for a better driver - you would need to treat them all sceptically.

    How to Identify an Unknown Device in Device Manager - Dell UK suggests about the same as I have but with pretty pictures. You might find it easier to follow them than me.



    Denis
    Last edited by Try3; 06 May 2020 at 09:44.
      My Computer


  3. Xii
    Posts : 3
    Windows 10 Educational ( Free professional)
    Thread Starter
       #3

    well this is strange.. it just disappeared, not sure what is was in the first place was guessing it was the ports on my monitor wich require an input over a usb type b since thats basically an internal hub.

    thanks for the help though! that could be a useful place to find random drivers that dont get auto detected and aren't listed anywhere
      My Computer

  4. bpatters69's Avatar
    Posts : 39
    10
       #4

    Denis,

    I used the ID method you referenced for determining what driver is being used. Interestingly, the driver that Windows Update Installed (I upgraded to the latest Win 10 Build) is a Windows 7 driver! ASRock has a Realtek Driver and I will install that driver. I doubt it will fix the audio issue as I have tried it before.

    My UMBus Enumerator is showing up as an unknown device with no driver-driver-info.jpg
      My Computer

  5. Try3's Avatar
    Posts : 7,482
    Windows 10 Home x64 Version 20H2 Build 19042.928
       #5

    To all others - This exchange has been spawned from Windows 10 Repair Tool? - TenForums

    Bill,

    At least you have confirmed that the HardwareID indicates a Realtek device.

    bpatters69 said:
    Interestingly, the driver that Windows Update Installed (I upgraded to the latest Win 10 Build) is a Windows 7 driver
    What makes you say that it's a Windows 7 driver? I realise that driver utility says it is for Windows 7 but WU would not take a driver from that utility anyway.

    Denis
      My Computer

  6. bpatters69's Avatar
    Posts : 39
    10
       #6

    What makes you say that it's a Windows 7 driver?

    I was going by what it said in the graphic I posted. I upgraded from Windows 7 to 10 and I would have thought the driver changed from a Win 7 to 10 but who knows these days. Thanks
      My Computer


 

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