How to Enable or Disable Create Virtual Displays for Classic Apps in Mixed Reality in Windows 10


Windows Mixed Reality blends real-world and virtual content into hybrid environments where physical and digital objects coexist and interact.

Windows Mixed Reality includes native support for classic desktops apps (Desktop (Win32) applications) starting with Windows 10 build 18329. To do so, Windows 10 uses virtual displays to show these apps in the mixed reality home.

These virtual displays may impact your display layout, especially if you have multiple physical displays.

Disabling virtual display creation at mixed reality startup may result in your headset display briefly freezing when you launch a classic app in mixed reality.

This tutorial will show you how to enable or disable create virtual displays for classic apps when Mixed Reality starts for your account in Windows 10.

This Classic apps setting is currently only available to Windows Insider builds.



Contents

  • Option One: Enable or Disable Create Virtual Displays for Classic Apps in Mixed Reality in Settings
  • Option Two: Enable or Disable Create Virtual Displays for Classic Apps in Mixed Reality using REG file



EXAMPLE: Classic Apps in mixed reality home
Enable or Disable Virtual Displays for Classic Apps in Mixed Reality-mixed_reality_classic_apps.jpg






OPTION ONE

Enable or Disable Create Virtual Displays for Classic Apps in Mixed Reality in Settings


1 Open Settings, and click/tap on the Mixed reality icon.

2 Click/tap on Startup and desktop on the left side. (see screenshot below)

3 Check (enable - default) or uncheck (disable) Create virtual displays for classic apps when mixed reality starts for what you want under Desktop view on the right side.

4 You can now close Settings if you like.

Enable or Disable Virtual Displays for Classic Apps in Mixed Reality-mixed_reality_classic_apps_settings.jpg






OPTION TWO

Enable or Disable Create Virtual Displays for Classic Apps in Mixed Reality using REG file


The downloadable .reg files below will modify the DWORD value in the registry key below.

HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Holographic

PreallocateVirtualMonitors DWORD

0 = Disable
1 = Enable


1 Do step 2 (on) or step 3 (off) below for what you would like to do.


2 To Enable Create Virtual Displays for Classic Apps in Mixed Reality

This is the default setting.

A) Click/tap on the Download button below to download the file below, and go to step 4 below.

Enable_create_virtual_displays_for_classic_apps_in_mixed_reality.reg

Download


3 To Disable Create Virtual Displays for Classic Apps in Mixed Reality

A) Click/tap on the Download button below to download the file below, and go to step 4 below.

Disable_create_virtual_displays_for_classic_apps_in_mixed_reality.reg

Download


4 Save the .reg file to your desktop.

5 Double click/tap on the downloaded .reg file to merge it.

6 When prompted, click/tap on Run, Yes (UAC), Yes, and OK to approve the merge.

7 You can now delete the downloaded .reg file if you like.


That's it,
Shawn Brink