The connection problem of Holographic Emulation in Unity when using Hololens 2

Unity Engine
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Hi! I am currently using Hololens 2 and Unity to develop MR-related work. I intend to use “Holographic Emulation” in Unity to run the program directly in Unity Editor(Ref: Unity Play Mode with Holographic Remoting, https://docs.microsoft.com/en-us/windows/mixed-reality/develop/unity/unity-play-mode). However, the connection always fails with these two errors: “TransportConnectionFailed” and “TransportPortBusy”.

My Unity version is 2019.4.9f1, but I have tried some old versions, e.g. 2019.1, 2019.3 with the same errors. The MRTK is Microsoft Mixed Reality Toolkit v2.4.0.

I followed the instructions and used the Holographic(Deprecated) in Unity. Also, I have tried new XR plugins Management in Unity, but it also failed. I am considering the version compatibility of Unity and Hololens 2 SDK. Could anyone share some solutions to get the “Connection Status” Connected?

Thanks in advance!

6364983--708300--unity hololens error.PNG
6364983--708303--unity hololens error2.PNG

2

I am having similar problems. I hope someone answers this one.

3

I also have this problem. But it’s okay to connect Holographic a month before, and the problem suddenly appears recently. It should has nothing to do with changes to my unity project, cause I started a whole new project and can see the same problem. Wonder if it’s some settings about the hololens or my coding PC.
Hope someone could answer this question.