Key Points
- Microsoft has released Windows 11 Insider Preview Build 27909 to the Canary Channel, offering general improvements and bug fixes for Insiders.
- The update includes fixes for issues affecting the Xbox app, Settings, Remote Desktop, and more, but also introduces some known issues for certain users.
- Copilot+ PC users may lose PIN and biometric access after upgrading and will need to reset their PIN to sign back in.
Microsoft has released Windows 11 Insider Preview Build 27909 to Insiders in the Canary Channel. The build comes with a range of general improvements and bug fixes aimed at enhancing the experience for users testing early versions of the operating system. However, the company has also flagged a number of known issues that may affect some users.
Among the improvements are fixes to key areas such as administrator protection, where the Xbox app previously failed to launch, showing error codes 0xC0000142 or 0xC0000045. Additionally, the battery percentage display has been restored in Settings > System > Power & Battery, after being missing in previous builds.
The update also resolves a rendering problem in Remote Desktop on Arm64 PCs, which had caused major graphical distortions. Other addressed issues include a frequent crash linked to pcasvc.dll, problems with Media Player when casting to devices, and failures in Remote Credential Guard setups between Windows 11 and Windows Server 2022 or earlier.
Despite the fixes, there are important known issues to note. Users of Copilot+ PCs upgrading from other channels may run into error 0xd0000225, which blocks PIN and biometric login. A workaround is to select “Set up my PIN” to regain access. Additionally, some users may experience repeated system crashes (KERNEL_SECURITY_CHECK_FAILURE) after connecting to a VPN.
In a surprising twist, this build also plays the Windows Vista boot sound instead of the Windows 11 sound, a change Microsoft says is temporary and will be corrected in a future update.
There are also ongoing issues with Settings, including random crashes and text display errors involving misplaced apostrophes. Microsoft is currently investigating these problems.
Microsoft reminds Canary Channel users that builds like this one are in early development and may not reflect final product features. Some features may never be released beyond the Insider program. The use of Control Feature Rollout means that not all users will see all features immediately.
To switch away from the Canary Channel, users must perform a clean install of Windows 11, as downgrading is not supported due to technical limitations.
The familiar desktop watermark in the lower-right corner remains a standard part of pre-release builds,提醒 users that they are using a test version of Windows. More details about Insider builds and their release status can be found on the Flight Hub page.
This release highlights Microsoft’s continued focus on gathering early feedback and refining core Windows experiences ahead of broader rollouts.
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