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Microsoft Windows 10 Insider Preview build 17604, and 17101 Features

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According to a post on Microsoft’s official blog, Microsoft released Windows 10 Insider Preview Build 17101 (RS4) to Windows Insiders in the Fast ring. And also Released the first Redstone 5 Windows 10 Insider Preview Build 17604 (RS5) to Windows Insiders who have opted into Skip Ahead. With This Windows 10 Insider Preview build 17604, and 17101, Microsoft included features like Emoji design improved and brings emojis to 150 more languages, granular App Permissions,  a new power policy in Control Panel called Ultimate Performance and new ‘Windows 10 Pro for Workstations’ applications that are focused on productivity and enterprise (instead of consumer applications and games).

Windows 10 Preview Build 17101 and RS5 17604

Both builds have the same list of new features for the time being. Here’s what’s new on Windows 10 Insider preview Build 17101 and RS5 17604.




New Improved Emojis

With build 17101, Windows 10 updates the design of its emojis and brings emojis to 150 more languages, including English (Great Britain), French (France), German (Germany), Spanish (Spain), and more. This will help you get the emoji you want easily and quickly. For them who don’t know, To bring up the Emoji Panel set focus to a text field and press WIN + (period) or WIN + (semicolon).

Windows 10 Preview Build 17101 updated emojis
Windows 10 Preview Build 17101 updated emojis – Credit Microsoft windows

UWP File System Access

With Windows 10 Insider Preview build 17604, and 17101 you have more control to decide which UWP apps can access your Full file system. In the Privacy settings section, you’ll now find a new File System page that allows you to grant permission to Microsoft Store apps to have broad file system access. This capability will be granted on a per-app basis by Microsoft. If an app has the broad file system access restricted capability, you will receive a consent dialog prompting you to accept or deny the request.

Ultimate Performance

With Windows 10 Insider Preview build 17604, and 17101 Microsoft introduce a new power policy in Control Panel called Ultimate Performance, which is based on the current High-Performance policy, but it goes a step further to eliminate micro-latencies associated with fine-grained power management techniques. (The Ultimate Performance power policy is currently not available on battery-powered systems.)




The new power plan will be available to Windows 10 Pro for Workstations users alongside the existing power plans and, can be switched on either by an OEM on new systems or selected by a user.

A new power scheme – Ultimate Performance
A new power scheme – Ultimate Performance (Credit Microsoft Windows)

Windows App Preview Program

Another thing to note is the with this preview build Microsoft introduction of the Windows App Preview Program. This will allow Insiders in the Fast, Slow, and Release Preview rings to have access to the latest Windows 10 app updates. It’s an opt-in program and will provide previews for the following apps:

  • Feedback Hub
  • Microsoft Photos
  • Microsoft Sticky Notes
  • Microsoft Tips
  • Paint 3D
  • Windows Alarms & Clock
  • Windows Calculator
  • Windows Camera
  • Windows Mixed Reality Viewer
  • Windows Voice Recorder

To opt-in to the Windows App Preview Program, go to Settings or About page of an app and click the “Join Preview” button.

Windows App Preview Program
Windows App Preview Program (Photo Credit – microsoft)

 Here is a look at the other changes, improvements, and fixes in this latest build:

    • Fixed an issue from the last flight were some PCs failed to resume from hibernate (requiring a hard reboot to recover).
    • Fixed an issue resulting in 3 and 4 finger gestures on the touchpad being unresponsive in the last two flights.
    • Fixed an issue after upgrading to the last flight where Start didn’t work for Insiders who’d had HomeGroup added as a folder to appear on Start.
    • Updated the touch keyboard so that if you try to shape write in an unsupported text field or when the typing resources aren’t installed, you won’t see the shape writing trail as you swipe your finger over the keys.



  • Fixed an issue where the touch keyboard showed an English layout with no IME on/off key when an East Asian keyboard is the only input method on your system.
  • Fixed an issue where if you install a font product from the Microsoft Store, then later install a new build (feature update), the Store package will remain installed, but the fonts within the package are not installed. Until this is fixed, the temporary workaround is to uninstall the product from the Apps page in Settings, then re-acquire the product from the Store.
  • Fixed an issue where the touch keyboard might stop invoking automatically after locking the PC and then unlocking the PC by using the touch keyboard to enter your PIN or password.
  • Fixed an issue where the Japanese IME sometimes wouldn’t turn on correctly.
  • We fixed an issue where the floating dictation UI could be unexpectedly tiny.
  • We fixed an issue that could result in the mouse cursor suddenly jump to screen corner while the mouse was moving in a List Control.
  • Fixed an issue that could result in tabs hanging and not loading content recently in Microsoft Edge after using the browser for a few days with an adblocker enabled.
  • Fixed an issue resulting in newly installed Microsoft Edge extensions not appearing in the Extensions pane in the last two flights.
  • We fixed an issue in Microsoft Edge where favicons in the light theme were unexpectedly getting black backgrounds.
  • Fixed an issue that could result in UWP apps sometimes launching as small white rectangular boxes.
  • Fixed an issue resulting in certain fingerprint readers not working in recent flights.
  • Fixed an issue where Windows Hello failed to work on Surface Laptops with the last build.
  • Fixed an issue that could result in the labels for files on the desktop overlapping their icons.
  • Updating the “Advanced graphics settings” link on the Display Settings page to now just say “Graphics Settings”.
  • When your volume is muted, the volume icons in the Sound Settings page will also now appear muted.
  • If you click the Reset button on the App volume and device preferences page, it will now also reset any app-specific volumes you’ve set back to default (100%).
  • Fixed an issue resulting in app updates failing in the Microsoft Store with error 0x80070057 in recent builds.
  • Fixed an issue resulting in app updates failing in the Microsoft Store with error 0x803FB005 in recent builds.
  • Fixed an issue where bringing up Game bar using the Xbox button on an Xbox One controller didn’t work in some games.
  • Fixed an issue wherein the text box for the Mixer stream title using non-character keys (e.g. Tab, Delete, Backspace, etc.) might cause the game to hang for a few seconds.
  • Fixed an issue where keyboard and mouse input might not work correctly in the Game bar when playing a first-person game (e.g. Minecraft).
  • Fixed an issue where in some games—such as Destiny 2 and Fortnite—mouse and keyboard input would still go to the game while the Game bar was open.
  • Fixed an issue during first shutdown/boot, or reboot, where for some users the device goes into a boot loop and the OS never loads.

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There are many known issues and other changes for both builds. Make sure to read Dona Sarkar’s post to get a full list of all new features, known issues, and developer notes. This includes more clarity for Insiders about the Skip Ahead program, too.

This preview build will download and install automatically on your device, but you can always force the update from Settings > Update & security > Windows Update and click the Check for updates button. Or you can Download Windows 10 Redstone 5 Build 17604 ISO by clicking this Download link.

Source Windows Blog
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