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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 (11)

  1. Develax

    Jan 02, 2022 13:35

    Still occurs in 2021.1.17f1

  2. huh1234

    Jan 02, 2022 01:08

    I'm still experiencing this in 2020.3.25 Personal so PLEASE tell me how to fix this.

  3. daisySa

    Jun 06, 2018 03:47

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

  4. MrLucid72

    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

  5. ComicSeans

    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.

  6. NotEvenTrying

    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.

  7. joewheats

    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.

  8. zworp

    Dec 31, 2016 16:42

    It's back in Unity 5.5.0f3 :(

  9. FNC-Afonso

    Aug 27, 2016 15:34

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

  10. krougeau

    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!!!

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