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Microsoft Releases Windows 10 19H1 Preview Build 18312 with Reserved Storage

Microsoft today released Windows 10 19H1 preview build 18312 to Insiders in the Fast ring. Today’s release follows up on last week’s build 18309 which introduced a password-less sign-on experience. In addition to the usual fixes and improvements, today’s build introduces a reserved disk space feature for smoother upgrades and more. Here is a look at what you can expect.

Windows 10 19H1 Preview Build 18312

This build includes Microsoft’s changes to managing disk space through “reserved storage,” for a smoother upgrade process. The company says, “Through reserved storage, some disk space will be set aside to be used by updates, apps, temporary files, and system caches. Our goal is to improve the day-to-day function of your PC by ensuring critical OS functions always have access to disk space.” To learn more about the technical details, make sure to read the company’s article on Technet about Windows 10 and Reserved Storage.

There is a new “Reset this PC” experience that can be found in Settings > Update > Security > Recovery. It will provide a more consistent reset experience across devices and require less work.

In addition to the changes above, here is the list of other changes and improvements to expect:

  • We fixed an issue where the Network shares page in File Explorer used black text in dark theme.
  • We fixed an issue impacting Microsoft Edge reliability in the last few builds.
  • We fixed an issue where USB printers may appear twice in Devices and Printers under Control Panel.
  • We fixed an issue where the console would lose color when spawning a new Command Prompt.
  • Following up on our work earlier this release to make the console scrollbar dark when dark theme is enabled, the title bar will also now bar dark (if you haven’t chosen in Settings to use your accent color in the title bar).
  • We’re adding a group policy for disabling acrylic on the sign-in screen. This can be found in Group Policy Editor under Administrative Templates > System > Logon > “Show clear logon background”.
  • We fixed an issue where custom desktop/Lock screen images deployed by a runtime provisioning package would be removed after Windows Update.
  • We fixed an issue where the shadow behind a flyout might zoom in after the flyout appeared.
  • We fixed an issue where, if enabled, the Windows Start Up Sound might not play after turning on from shutdown or after updating.
  • We fixed an issue where the File Properties dialog wouldn’t show the full timestamp if “Conversational format” was selected for the Date Modified column in File Explorer.
  • We fixed an issue where the hyperlink colors needed to be refined in Dark Mode in Sticky Notes if Insights were enabled.
  • If you were experiencing Sticky Notes stuck on Loading with Build 18309, please check the Microsoft Store for Sticky Notes version 3.5.4.

Of course, as it the case with all early Insider preview builds, this one includes a healthy list of known issues for both user and developers. Make sure to read Microsoft’s full announcement for all changes, known issues, and workarounds.


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