Windows 10 build 16257 (rs_prerelease)

Build of Windows 10 April 2018 Update
OS familyWindows 10 (NT 10.0)
Version number10.0
Build number16257
Build revision1000
Architecturex86, x64, ARM64
Build labrs_prerelease
Compiled on2017-07-28
Expiration date
Timebomb2018-07-02 (+339 days)
Cloud N
Home N
Pro N
Enterprise N
Single Language
Product key
Use a Windows 10 Retail serial
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Win10-16257rs prerelease-winver.png
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Windows 10 build 16257 (rs_prerelease) is the second Insider Preview build of Windows 10 April 2018 Update. This build was released to Windows Insiders that were opted into Skip Ahead on 2 August 2017.

Changes[edit | edit source]

  • Introduced Eye Control, a feature designed for people with disabilities to operate an on-screen mouse, keyboard and a text-to-speech experience by using only their eyes. It requires a compatible eye tracker to use it. The features of Eye Control are detailed in the release announcement.
  • Gave Microsoft Edge an improved look inspired by Fluent Design.
  • Command Prompt had its color values changed to improve the readability of darker colors.
  • Improvements to IME and the touch keyboard.
  • Various improvements to Windows Defender Application Guard.
  • Various other improvements and bug fixes.

Bugs[edit | edit source]

  • There's a chance that the Start menu, Action Center, and notification toasts will have a background that is 100% transparent. To fix it, either end ShellExperienceHost.exe via Task Manager or restart the PC.
  • Action Center may show it has a number of notifications, but when it is clicked, there are no notifications to be seen.
  • Sometimes if suggested apps are turned off, sometimes they will appear anyway. If this bug is encountered, navigate to Settings -> Personalization -> Start -> and then toggle “Occasionally show suggestions in Start”.
  • When you install or update a Windows Store app, you may encounter error code 80070057.
  • After upgrading to this build, the Virus and Threat Protection part in Windows Defender Security Center will show as "unknown". Reboot the PC to fix it.

Gallery[edit | edit source]

External links[edit | edit source]