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Fixed in 5.0.2



Found in


Issue ID




<RI.Hid> errors pluging/unpluging usb headphones, controller, bluetooth mouse



Not a harmful message. Related to editor's input manager. When manager can't handle the message, <RI.Hid> message appears.

Comments (9)

  1. 104e7a27c612efac575ba55db7ae50cf?d=mm


    Jun 06, 2018 03:47

    This issue is still occurring in Unity 2017.4.0f1 on Windows 10.

  2. 9746878fd170891307bb46706af297a8?d=mm


    Oct 02, 2017 12:55

    Why are there so many Unity issues being mysteriously marked as fixed when it's not? Unity 5.6.3

  3. B9fa5d4a5f72c49a94e0bdf9107b58f9?d=mm


    Jul 20, 2017 18:34

    I am also getting this error on Unity 2017.1.0f3. I cannot figure out what input device is causing it. I am running a win10 desktop with an oculus Rift attached and a wired keyboard and mouse.

  4. 9b2e8e3db4f95799558655f44b99c173?d=mm


    Jul 19, 2017 04:43

    I'm also getting this issue in the latest version (2017.1.0f3) of Unity; in my case it seems to be related to my bluetooth microsoft surface mouse.

  5. 7e9943a9f7a0dc37651a1ef1772da344?d=mm


    Feb 27, 2017 14:55

    We are experiencing this issue in Unity 5.5.1f1 Standalone build. In our case it happens when there is a Microsoft Kinect camera plugged in and screen is turned off using remote or display port is disconnected from graphics card.

  6. B864dd8061600cc932f68ace0100213c?d=mm


    Dec 31, 2016 16:42

    It's back in Unity 5.5.0f3 :(

  7. C115605159d0e7279b1bd8d74e62edaa?d=mm


    Aug 27, 2016 15:34

    <RI.Hid> Failed to create device file:
    2 The system cannot find the file specified

  8. 26ff21e93dce7aaf449a6e4ee580dc55?d=mm


    Apr 21, 2015 21:30

    Experiencing this issue in Unity 5, though it didn't occur in any previous versions. I tend to leave Unity open for extended periods of time when I'm working on a project & this error message is really clogging things up, not to mention making a mess of general debugging. I'm sure it's not a top priority, and I hope it's not a complicated fix, but I'm also sure I'm not alone in saying that having the issue resolved would be greatly appreciated. Thanks!!!

  9. Bd86813484ccd8ef1e508e0399a40bce?d=mm


    Mar 26, 2015 21:07

    thought i'ld add this one:

    <RI.Hid> Failed to create device file:
    1 Incorrect function.

    generated for each USB device connected to system (for whatever reason)... fills console after period of time, makes debugging a real pain when it (Unity) decides to flood this error.

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