I fail to set up Holographic Remoting though follow the steps.

Scarlett Wangle 41

I'm currently trying to use Unity 2020.3.36(LTS) and OpenXR to develop a system in the HoloLens 2. After installing all the packages and plugins that were required, I tried to set up Holographic Remoting following the steps here: preview-and-debug-your-app, but failed. Can anyone please tell me what I did wrong?
Here are my project settings:

Zuocheng Wang - MSFT 3,081 Reputation points Microsoft Vendor

2022-09-28T08:21:02.207+00:00

Hello, welcome to Microsoft Q&A,

How do you connect the device, USB or wi-fi? Is there any error message? You need to refer to Set up a new Open XR project with MRTK - Mixed Reality | Microsoft Learn to correctly configure Open XR, and then just configure Holographic Remoting like your third picture. Holographic Remoting remote app and Holographic Remoting remote app feature group are used for another remote mode, please refer to Use PC resources to power your app with Holographic Remoting remote app - Mixed Reality | Microsoft Learn to learn more.
Scarlett Wangle 41 Reputation points

2022-09-28T09:32:47.32+00:00

I have followed the " Set up a new Open XR project with MRTK - Mixed Reality | Microsoft Learn" at first, but it didn't work. I have tried to use wifi at first. After it failed, I turn off the wi-fi of the HoloLens 2 and used the original data cable to connect the device to the computer, that's why the IP started with 169, in the third picture.
But it didn't work, neither wi-fi or USB, anything else worked just fine, no error message, but nothing showed up in the device after I clicked the play button. The images stayed in the editor, in the game window.
So confused.
Scarlett Wangle 41 Reputation points

2022-09-28T09:35:43.483+00:00

I started a new project and repeat the whole process again, following the steps, still doesn't work. I'm using Windows 11, could this be the reason?
Zuocheng Wang - MSFT 3,081 Reputation points Microsoft Vendor

2022-09-30T08:06:04.433+00:00
I tested on Windows 11, with Unity 2020.3.36, OpenXR 1.5.1, MRTK 2.8.2 and it works fine.
>>I have followed the " Set up a new Open XR project with MRTK - Mixed Reality | Microsoft Learn" at first, but it didn't work.
What do you mean by "it didn't work"? These are some basic settings, please make sure you configure them correctly before trying to remote debug. Then please check the following:

Is the Developer Mode enabled on the PC and HoloLens, and Device discovery is checked?

Has the Holographic Remoting App been downloaded and running on the HoloLens?

Please double check that wi-fi is turned off when using USB. And is the IP used in Unity the same as the IP in Holographic Remoting App on HoloLens?

After clicking the Play button, does the project run normally or shut down in Unity? And is there an error message in the Holographic Remoting App? Also, you can do some testing in our official samples - Mixed reality feature samples and apps - Mixed Reality | Microsoft Learn.
Scarlett Wangle 41 Reputation points

2022-10-08T09:12:26.047+00:00

I cannot check the Device discovery, it slip to grey automatically once I slip it to blue.
Is there any method to fix it?
Strangely, the Holographic Remoting function works fine when I use Windows XR, even with the Device discovery unchecked.
Zuocheng Wang - MSFT 3,081 Reputation points Microsoft Vendor

2022-10-10T08:31:15.743+00:00

Sorry for the confusion, Device discovery is not a mandatory option here, I'm just in case. Does Windows XR mean you're using Windows XR Plugin Remoting for remote connections? It should be noted that if you enable two remote connection methods at the same time, then neither of them will work. Please make sure the Emulation Mode option in Windows XR Plugin Remoting is None when using Holographic Remoting for Player Mode. Also, have you tried the samples I mentioned above?