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Microsoft has just released Windows 10 Insider Preview Build 14959 for Mobile and PC to Windows Insiders in the Fast ring, which brought many new improvements and fixes. Users will notice a new Zoom option in the View menu which will allow them to override the default scaling and set it to 100, 125, 150 or 200, but some old issues still haven’t been solved.

Below we’ll tell everything you need to know about this build.

Improvements and fixes for PC



  • Automatic brightness adjust has been re-enabled, but it won’t affect users who manually configured their auto-brightness setting;
  • Computers were disconnecting from their domain network and users were failing to login, so this issue has been fixed;
  • Certain apps such as Outlook Mail and Calendar were failing to update, giving error code 0x800700B7;
  • Some device models where ejecting an SD card, resulting in a system crash;
  • When Insiders disliked one of the Spotlight lock screen images, the new image was showed immediately, being followed by a transition animation;
  • While in Tablet mode, when launching an application from another app, it didn’t launch it side by side, but in fullscreen.

Improvements and fixes for Mobile

  • Microsoft has updated the data usage page in Settings via Settings > Network & wireless;
  • Insiders were prevented from adding cards to Wallet and paying using tap to pay;
  • Insiders will no longer be able to close Start in the task switcher;
  • Some options for default calling app via Settings > System > Phone > Default apps were unexpectedly missing;
  • Groove Music and other apps that play media in the background stopped when Battery Saver turned on;

  • Copy/paste didn’t work and Insiders had to restart their phones;
  • Settings was hanging after unchecking “Let apps automatically use this VPN connection” in VPN Settings.

Known issues for PC

  • Internet Explorer may crash after it’s launched, but it will work afterwards;
  • 3rd party antivirus products could prevent the PC from completing the update to this build.

Known issues for Mobile

  • Insiders will not be able to install additional languages, keyboards, and speech packs for the next weeks;
  • Microsoft warns users to no longer use the previous “date change” workaround.

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