Announcing Windows 11 Insider Preview Build 27863 (Canary Channel)

Hello Windows Insiders,

Today we are releasing Windows 11 Insider Preview Build 27863 to the Canary Channel.

We are also not planning to release SDKs for 27xxx series builds for the time being.

Changes and Improvements

[Post-Quantum Cryptography]

  • As announced this week at the Build conference, we are adding support for post-quantum signature algorithm ML-DSA in NCrypt and BCrypt cryptography API surfaces, as well as Crypt32 certificate APIs. Three variants are supported, ML-DSA 44, 65, and 87. In Build 27858 and higher, we encourage you to try out using and validating ML-DSA certificates with these changes.

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.

Before you update your machine, visit the Announcing Windows 11 Insider Preview Build 27863 (Canary Channel)| Windows Insider Blog today to view full details on new features, general changes, improvements, known issues and much more!