In this article, you'll learn more about the HoloLens RS4 Preview. This preview is available to all HoloLens users, however, please note that installing this preview will erase all of your content and restore your device to factory settings. Like any pre-release software, you may encounter bugs and other issues along the way. For this reason, Preview builds are made for people who know their way around HoloLens and donít mind frequent updates with significant changes.

In order to install this preview, you must first download the latest version of the Windows Device Recovery Tool and ensure that your HoloLens is enrolled in the Windows Insider Program. After installing the preview, check for updated preview builds with Windows Update.

Update history

Update 3 - Build 17134.1000

Released April 18, 2018

This build is delivered over the air (OTA) through Windows Update after you've manually installed the HoloLens RS4 Preview using the instructions at the top of this page.

General changes, improvements, and fixes:

  • Reliability issues for exclusive apps.
  • Interactions while moving slates and blooming.
  • Cortana/Skype integration.
  • Speech in OOBE stability.
  • UWP app reliability with mouse/gamepad integration.


Source: HoloLens RS4 Preview - Mixed Reality | Microsoft Docs