Windows 10 preview build 19635 rolls out to Fast ring Insiders

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The latest preview build of Windows 10 doesn't include any new features, focusing instead on fixes.

The Surface Pro 7
The Surface Pro 7 (Image credit: Windows Central)

What you need to know

  • Microsoft shipped Windows 10 preview build 19635 to Fast ring Insiders today.
  • The build includes a fix that addresses a screen flashing issue on some devices.
  • Insiders on the Fast ring can download this update now via Windows Update.

Just one day after releasing Windows 10 version 2004 to the general public, Microsoft rolled out a new preview build of Windows 10 to Fast ring Insiders. The release brings build 19635 and includes several fixes. The build doesn't have any big new features, in fact it has no new features at all. One of the fixes addresses a screen flashing issue on some devices and another fixes an issue that could cause cellular data to not work on some devices.

Here's a look at everything that's fixed in Windows 10 preview build 19635 as well as its known issues:

Fixes

  • We fixed an issue resulting in the apostrophes in the Location not available dialog, Mount File dialog, and File Explorer folder options text not being displayed correctly.
  • We fixed an issue where the Work or School account > Allow Windows Search to provide… toggle under Search Settings could be unexpectedly disabled.
  • We fixed an issue resulting in cellular data not working on certain devices.
  • We fixed an issue that could result in Settings crashing when changing display orientation or resolution.
  • We fixed an issue resulting in some Insiders seeing a large number of "Program Compatibility Assistant Service stopped working" critical events in Reliability Monitor.
  • We fixed an issue that could result in constant display flashing on certain devices.
  • We fixed an issue with the camera on certain devices showing unexpected artifacts.

Known issues

  • We're looking into an issue where some devices booting from eMMC storage may bugcheck when resuming from hibernate.
  • We're looking into reports of the update process hanging for extended periods of time when attempting to install a new build.
  • We're working on fixing an issue for a future Insider Preview build where in Settings > Privacy the Documents and Downloads sections show a broken icon next to their page name (just a rectangle).
  • We're looking into reports that taskbar preview thumbnails aren't rendering consistently (showing a blank area).

The build is rolling out to Insiders on the Fast ring now. You can also check out Microsoft's full release notes for the preview build.

Sean Endicott
Sean Endicott
News Writer and apps editor

Sean Endicott is a tech journalist at Windows Central, specializing in Windows, Microsoft software, AI, and PCs. He's covered major launches, from Windows 10 and 11 to the rise of AI tools like ChatGPT. Sean's journey began with the Lumia 740, leading to strong ties with app developers. Outside writing, he coaches American football, utilizing Microsoft services to manage his team. He studied broadcast journalism at Nottingham Trent University and is active on X @SeanEndicott_ and Threads @sean_endicott_.