Hello everyone.

We have decided to phase out the Mixed Reality Forums over the next few months in favor of other ways to connect with us.

The first way we want to connect with you is our mixed reality developer program, which you can sign up for at https://aka.ms/IWantMR.

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On May 1st we will be locking the forums to new posts and replies. They will remain available for another three months for the purposes of searching them, and then they will be closed altogether on August 1st.

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COM Exception When Switching Views

Hello All,

I have an app with 2 views: a 3D view using Unity and a 2D view with a WebView. When trying to switch between the views on the HoloLens Emulator version 10.0.17134.80, I get the following exception:

System.Runtime.InteropServices.COMException: 'Error HRESULT E_FAIL has been returned from a call to a COM component.'

The line that returns this exception is:

await dispatcher.RunAsync(CoreDispatcherPriority.Normal, async () =>
**await ApplicationViewSwitcher.SwitchAsync(this.view.Id);
** });

The same exact code works fine on HoloLens emulator version 10.0.14393.1358

Does anyone know if there is some setting or permission that I need on the newer version? Otherwise, can anyone explain how to troubleshoot this cryptic COMException? The message isn't giving me much to go on.

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