Windows 11 Insider Canary build 27943.1

Hello Windows Insiders, today we are releasing Windows 11 Insider Preview Build 27943 to the Canary Channel.

Changes and Improvements

[General]

This update includes a small set of general improvements and fixes that improve the overall experience for Insiders running this build on their PCs.

Fixes

[General]

Fixed the issue causing Settings > System > Storage > Temporary files to get stuck when scanning files. This issue also caused the entry to clean up previous Windows Installations to not show in Storage Settings.

[Taskbar]

Fixed an issue where if you minimized an app and switched back and forth between desktops, you might end up seeing a duplicate preview thumbnail when hovering over the app in the taskbar.

[Display and Graphics]

Fixed an issue which could result in HDR unexpectedly turning off immediately after you enabled it in Settings.

[Other]

Fixed an issue causing an event saying “The “Microsoft Pluton Cryptographic Provider” provider was not loaded because initialization failed” with error 57 to appear in Event Viewer for some Insiders after boot.
Fixed an issue where if you had to enter a PIN for your device to cast from Quick Settings, pressing Enter wouldn’t confirm the PIN.
Made another fix to help with Group Policy Editor having unexpected large blank areas and not rendering correctly with the Chinese display language.

Known issues

[General]

[IMPORTANT]Some Windows Insiders may experience a rollback attempting to install this build with either an 0xC1900101-0x20017 error or 0xC1900101-0x30017 error. Unfortunately retrying to install the build will result in another rollback. We are working on a fix.
[NEW] We’re working on the fix for an issue causing some Insiders with Arm64 PCs to experience an increase in bugchecks (green screens) with error IRQL_NOT_LESS_OR_EQUAL in the latest Canary builds.

[For developers]

PIX on Windows is unable to play back GPU captures on this OS version. This will be addressed by a new PIX release, estimated to arrive by the end of September. In the meantime, if you are impacted, you can use the “Send Feedback” button in PIX or contact us on the DirectX Discord server and we can help provide private builds.

[Graphics]

We’re investigating an issue which is causing some Insiders to experience screen flickers when using the browser (and potentially other scenarios) in the latest Canary builds.

[Audio]

Some Windows Insiders in the Canary Channel are experiencing an issue where audio stops working and Device Manager shows one or more devices with a yellow exclamation mark, including “ACPI Audio Compositor” and others. Selecting Properties on these devices will show “Windows cannot load the device driver for this hardware. The driver may be corrupted or missing.” If you are impacted by this issue, you can follow these instructions to get back into a working state:
- Right-click on the device with a yellow exclamation mark in Device Manager and select “Update driver”.
- Choose “Browse my computer for drivers” and then “Let me pick from a list of available drivers on my computer”.
- Select the driver from the list with the most recent date and click “Next”. If you are presented with a list of common hardware types instead of one or more specific drivers, this device is not related to this issue.
- This device should be repaired and no longer show a yellow exclamation mark in Device Manager. If it continues to show a yellow exclamation mark, the yellow exclamation mark is not related to this issue.
- Repeat these steps for each device with a yellow exclamation mark.

Reminders for Windows Insiders in the Canary Channel

The builds we release to the Canary Channel represent the latest platform changes early in the development cycle and should not be seen as matched to any specific release of Windows and features and experiences included in these builds may never get released as we try out different concepts and get feedback. Features may change over time, be removed, or replaced and never get released beyond Windows Insiders. Some of these features and experiences could show up in future Windows releases when they’re ready.
Many features in the Canary Channel are rolled out using Control Feature Rollout technology, starting with a subset of Insiders and ramping up over time as we monitor feedback to see how they land before pushing them out to everyone in this channel.
Some features may show up in the Dev and Beta Channels first before showing up in the Canary Channel.
Some features in active development we preview with Windows Insiders may not be fully localized and localization will happen over time as features are finalized. As you see issues with localization in your language, please report those issues to us via Feedback Hub.
To get off the Canary Channel, a clean install of Windows 11 will be required. As a reminder – Insiders can’t switch to a channel that is receiving builds with lower build numbers without doing a clean installation of Windows 11 due to technical setup requirements.
The desktop watermark shown at the lower right corner of the desktop is normal for these pre-release builds.
Check out Flight Hub for a complete look at what build is in which Insider channel.