The new Microsoft Edge is available for download and has begun automatically rolling out to customers via Windows Update.
The new Microsoft Edge adopts the Chromium open source project on the desktop. This creates better compatibility for customers and less fragmentation for web developers. It will also support WebXR at launch, which is the new standard for creating immersive web experiences for VR headsets, in place of WebVR.
[!IMPORTANT] When you install Microsoft Edge on an up-to-date Windows 10 or Windows 11 device, it will replace the previous (legacy) version on your PC.
Before you install the new Microsoft Edge, upgrade to Windows 10 Version 1903 or later or Windows 11 for native Win32 application support like the new Microsoft Edge in Windows Mixed Reality. Check Windows Update or manually install the latest version of Windows 10 or Windows 11.
Once you have Windows 10 Version 1903 or later or Windows 11, you’re ready for the new Microsoft Edge! The new Microsoft Edge is rolling out via Windows Update, but you can manually install the new Microsoft Edge from the Microsoft Edge website if you want it sooner.
[!IMPORTANT] The new Microsoft Edge launches with support for WebXR, the new standard for creating immersive web experiences for VR headsets. When you install the new Microsoft Edge, you will no longer be able to play WebVR experiences in Microsoft Edge.
After taking the 2020-01 Cumulative update for Windows 10 Version 1903 or later, virtual monitors will appear as generic physical monitors in Settings > System > Display during Windows Mixed Reality sessions. Some customers, especially those with more than one physical monitor, may notice issues with desktop layout and input handling as a result.
Why this happens
Support for classic Win32 applications in Windows Mixed Reality was introduced with the Windows 10 May 2019 Update. To enable this support, a virtual monitor must be created to host the Win32 application. Each time a new Win32 application is launched, another virtual monitor has to be created. Unfortunately, creating a virtual monitor is an intensive task that can cause the headset display to briefly freeze. Customers offered feedback that the experience was uncomfortable and disruptive. Because of that feedback, alongside increased usage of Win32 applications, we decided to pre-allocate three virtual monitors during startup of Windows Mixed Reality to prevent this disruption and enable customers to launch up to three concurrent Win32 applications without experiencing the headset display freeze.
Workaround
We’ve since received feedback that some customers, especially those with multiple physical monitors, would prefer to disable this virtual monitor pre-allocation. To give customers more control, we’ve enabled a workaround that involves changing a registry key value, available with the following Windows Updates:
[!NOTE] Modifying registry key values is intended for advanced users.
[!WARNING] Disabling virtual monitor pre-allocation may result in your headset display briefly freezing when you launch a Win32 application (such as Steam, the new Microsoft Edge, or Google Chrome) in Windows Mixed Reality.
To disable virtual monitor pre-allocation:
Virtual monitors will now allocate when you attempt to launch a Win32 application in Windows Mixed Reality instead of pre-allocating. To reset this and re-enable virtual monitor pre-allocation, return the DWORD “Value data” to 1.
edge://flags, search for “multi gpu” and enable the flag called WebXR Multi GPU Support.edge://system/ in the address bar and selecting the Expand button next to “extensions.”