Here's what's fixed, improved, and still broken in Windows 10 build 18329

At the tail end of the week, Microsoft today released Windows 10 Insider Preview build 18329 to the Fast ring. Improvements include Win32 apps running in Windows Mixed Reality and more. But as always, there's a long list of fixes, improvements, and known issues.

For one thing, there are a variety of languages that this build will not be available in:

  • Windows 10 Home: RO-RO, SK-SK, SL-SI, SR-LATN-RS, TH-TH, UK-UA

  • Windows 10 Home N: RO-RO, SK-SK, SL-SI

  • Windows 10 Pro: FR-CA, IT-IT, JA-JP, KO-KR, NL-NL, PL-PL, SR-LATN-RS

  • Windows 10 Pro N: RO-RO, SK-SK

Also, as per this week's Windows Insider webcast, this build isn't available in an ARM64 variant.

Here's what got fixed and improved:

  • REMINDER: The new tamper protection setting in the Windows Security app protects your device by helping to prevent bad actors from tampering with the most important security settings. The setting is designed to be on by default, however the default state is not currently in effect for current Insider Preview builds. You may see a new recommendation in the Windows Security app suggesting you turn this setting on.

  • We fixed an issue resulting in many Win32 apps having an unexpectedly long launch time due to being incorrectly suspended by the OS in the last two flights.

  • We fixed an issue where the Windows Insider Program settings pages via Settings > Update & Security > Windows Insider Program had a bug preventing Narrator and Screen Reader programs from properly reading the page.

  • We fixed an issue from the previous flight where Desktop Window Manager would crash if multiple Office and/or video playback applications were running on the same screen on devices with Multiplane Overlay Support.

  • We fixed an issue resulting video playback going black after rotating a device from landscape to portrait.

  • We fixed an issue resulting in a green screen with error Kernel_auto_boost_lock_acquisition_with_raised_irql when using an Xbox controller with your PC.

  • We fixed an issue resulting in USB devices, including mice and keyboards, potentially not working after updating to recent builds.

  • We fixed an issue resulting in intl.cpl hanging when copying settings.

  • We fixed an issue resulting in Microsoft Edge not being able to access local IPs.

  • We fixed an issue resulting in not being able to extend your monitor to a second screen connected via Miracast.

  • We fixed an issue where when you opened a new Notepad window and pressed CTRL + F, the Find window would unexpectedly be populated with the search query from the last time the Find window was used in a previous Notepad instance.

  • We fixed an issue from the previous flight that caused consistent black screens when using Remote Desktop, DisplayLink, or Miracast if you are on an AMD or Nvidia driver.

Here are the known issues:

  • The Windows Security app may show an unknown status for the Virus & threat protection area, or not refresh properly. This may occur after upgrade, restart, or settings changes.
  • Launching games that use anti-cheat software may trigger a bugcheck (GSOD).

  • Creative X-Fi sound cards are not functioning properly. We are partnering with Creative to resolve this issue.

  • While night light functionality is back up and running, you may still find issues with other blue light reduction software not working.

  • When performing Reset this PC and selecting Keep my files on a device that has Reserved Storage enabled the user will need to initiate an extra reboot to ensure Reserved Storage is working again properly.

  • Some Realtek SD card readers are not functioning properly. We are investigating the issue.

  • The value in Narrator Settings “Change the level of detail Narrator provides about text and control” might be empty. To work around this issue, use the Narrator command Narrator key + v to change the verbosity level, then close and reopen Settings app again.

  • After upgrade, there might be two Narrator voices talking at the same time. Reboot the machine once, this issue will go away.

  • Windows Sandbox may launch to a black screen for some users.

  • Taskbar icons may stop loading and appear blank.

  • Some of the Real-Time Protection options for Malwarebytes Premium are not able to be turned on.

  • You may see an error when unzipping files.

  • The brightness slider may not work.

  • Opening Color filters setting in the Ease of Access setting will crash the Settings app.

And of course, there's one known issue for developers:

  • If you install any of the recent builds from the Fast ring and switch to the Slow ring – optional content such as enabling developer mode will fail. You will have to remain in the Fast ring to add/install/enable optional content. This is because optional content will only install on builds approved for specific rings.

Microsoft also noted that app updates are still locked down, as they will be until Windows 10 version 1903 is released. You can either join individual app preview programs to work around this, or you can sign up for the Skip Ahead ring, which will begin getting 19H2 builds soon.

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