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![](data:image/svg+xml, %3Csvg xmlns='http://www.w3.org/2000/svg' height='64' class='font-weight-bold' style='font: 600 30.11764705882353px "SegoeUI", Arial' width='64'%3E%3Ccircle fill='hsl(70.4, 16%, 16%)' cx='32' cy='32' r='32' /%3E%3Ctext x='50%25' y='55%25' dominant-baseline='middle' text-anchor='middle' fill='%23FFF' %3EHS%3C/text%3E%3C/svg%3E)
I can not resolve this issue. occur in my hololens2 for unity project
Could not load file or assembly “Microsoft.Tools.Connectivity, Version=10.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35”
but i'm sure have this file in
C:\Program Files(x86)\Windows Kits\10\bin\(my project sdk version)/(my project architecture)/
I did not see any solution or answer. I will appreciate any suggestion.
![](data:image/svg+xml, %3Csvg xmlns='http://www.w3.org/2000/svg' height='64' class='font-weight-bold' style='font: 600 30.11764705882353px "SegoeUI", Arial' width='64'%3E%3Ccircle fill='hsl(313.6, 1%, 40%)' cx='32' cy='32' r='32' /%3E%3Ctext x='50%25' y='55%25' dominant-baseline='middle' text-anchor='middle' fill='%23FFF' %3ESD%3C/text%3E%3C/svg%3E)
Hello, welcome to Microsoft Q&A,
To refer external functionalities in Unity, you may use the Plug-ins feature of Unity. Please also feel free to share a minimal reproduceable sample with us so that I can dig into this question,.
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Thanks for you replay. but my project is unity build to d3d project. I use visual studio open it.
That isuue occur when i start debugging in visual studio
May I know more details about your issue? To help us understand your issue, we need more information.
What's the Unity version and do you use the latest MRTK feature tools? Does this issue occur in a new project?
This issue can be caused by improper setup. Would you share a Minimal Reproduceable Sample or simple reproduction steps with us?
Thanks.
Unity version 2021.3.3f1. i'm sure use the latest MRTK feature tookls.
And a new projects. i just build a sample scene. but can not debug in my visual studio 2017.
if i make any mistake please tell me. thank u very much.
Hi,
The usage of Mixed Reality Feature Tool looks fine, but I am not sure of the configuration of your Unity project.
It is recommended to use Unity 2020.3 LTS and Visual Studio 2022, according to Install the tools and [Choosing a Unity version and XR plugin] (https://learn.microsoft.com/en-us/windows/mixed-reality/develop/unity/choosing-unity-version). Please let me know if this issue can be reproduced in the recommended development environment. It would be appreciated if you could provide detailed reproduction steps or share a minimal reproduceable sample with us.