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.

The plan between now and the beginning of May is to clean up old, unanswered questions that are no longer relevant. The forums will remain open and usable.

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.

So, where does that leave our awesome community to ask questions? Well, there are a few places we want to engage with you. For technical questions, please use Stack Overflow, and tag your questions using either hololens or windows-mixed-reality. If you want to join in discussions, please do so in the HoloDevelopers Slack, which you can join by going to https://aka.ms/holodevelopers. And always feel free to hit us up on Twitter @MxdRealityDev.

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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