Today Microsoft has rolled out Windows 10 Redstone build 14291 for both PC and mobile devices, but as far as the former is concerned, this new version comes with quite a significant number of bug fixes and known issues.



First and foremost, the Windows development team has fixed a bug causing the notification area to look out of alignment and show two white arrows instead of the regular icon that allowed users to see hidden icons.
At the same time, they have also addressed an issue impacting connectivity to older Wi-Fi networks using WEP encryption, but also a minor problem that turned the USB icon in the system tray to the old version when ejecting drives.
Known issues in this build First and foremost, it’s important to know that Windows 10 Redstone build 14291 still has a freezing issue affecting Surface Pro 3, Surface Pro 4, and Surface Book models. This bug was first detected in the previous build, but it turns out that Microsoft needs more time to determine its cause.
“We continue to investigate an issue in which some Surface Pro 3, Surface Pro 4, and Surface Book devices experience a freeze or hang and all input such as keyboard/trackpad and touch do not work. The workaround is to hold down the power button to force the device to hard-reboot,” Gabe Aul, head of the Windows Insider program, has explained.
Additionally, Kaspersky security software is still impacted by a known driver bug that prevents it from working correctly in this build. Microsoft says that it’s already working with Kaspersky to develop a bug fix as soon as possible, but in the meantime, turning to a different security solution or sticking with Windows Defender might actually be a much better idea.
You can check out the full list of known issues and improvements in this build in the box below, and keep in mind that, since it’s a preview of the Redstone update, more issues might be discovered in different scenarios.

Build 14291 PC Change Log
Fixes:

• This issue causing the notification area (“systray”) to look out of alignment when turning on the “always show all icons in the notification area” should now be fixed.
• We fixed the issue where connectivity to older Wi-Fi networks using the WEP encryption security method may be broken.
• We fixed an issue where the “X” to close the “Find of Page” toolbar in Microsoft Edge is displayed off screen on 8-inch devices when in portrait mode.
• We fixed an issue where the USB icon in the notification area was reverting to the old icon when ejecting drives.
• We fixed an issue where clicking the suggested search in Microsoft Edge resulted in a URL to the search as the search string.

Known issues:

• We continue to investigate an issue in which some Surface Pro 3, Surface Pro 4, and Surface Book devices experience a freeze or hang and all input such as keyboard/trackpad and touch do not work. The workaround is to hold down the power button to force the device to hard-reboot.
• Your PC may freeze when plugging in an Xbox One or Xbox 360 controller and other gamepads in this build.
• If you use Hyper-V and have a Virtual Switch configured for your network adapter, you may see an error indicator (red-colored “X”) for your network adapter in the notification area of your taskbar. The error indicator is incorrect and your network adapter should continue to work just fine.
• We are seeing reports of some apps such as QQ crashing. We are currently investigating, and this bug may also impact older apps such as Windows Live Mail and Expression Encoder 4.
• If you have Kaspersky Anti-Virus, Internet Security, or the Kaspersky Total Security Suite installed on your PC there is a known driver bug that prevents these programs from working as expected in builds from the Development Branch. We are partnering with Kaspersky to fix this issue for a future release, but at this time there are no known workarounds. While this issue is present, we recommend using Windows Defender or another third party anti-virus product of your choice to remain protected.