Announcing Windows 11 Insider Preview Build 23506

Hello Windows Insiders,

Today we are releasing Windows 11 Insider Preview Build 23506 to the Dev Channel. We are releasing ISOs for this build – they can be downloaded here.

What’s new in Build 23506

Passwordless experience with Windows Hello for Business

With Windows Hello for Business (WHFB), Windows provides organizations with a strong, phish-resistant credential, helping customers move to a passwordless future. Enterprise customers can now set the EnablePasswordlessExperience policy that promotes a user experience on AAD joined machines for core authentication scenarios without requiring a password. This new experience hides passwords from certain Windows authentication scenarios and leverages passwordless recovery mechanisms, such as WHFB PIN reset, if necessary.

Once the policy is set, it removes passwords from the user experience, both for device logon as well as in-session auth scenarios like password managers in a web browser, “Run as” admin or as a different user scenarios, and User Account Control (UAC). Users will navigate through their core authentication scenarios using WHFB in place of passwords. If the user fails to sign in, recovery mechanisms such as PIN reset or web sign-in can be used to help the user recover their credentials without IT helpdesk engagement.

FEEDBACK: Please file feedback in Feedback Hub (WIN + F) under Security and Privacy > Windows Hello PIN. 

Unsafe password copy and paste warnings

Starting in Windows 11, version 22H2, Enhanced Phishing Protection in Microsoft Defender SmartScreen helps protect Microsoft school or work passwords against phishing and unsafe usage on sites and apps. We are trying out a change starting with this build where users who have enabled warning options for Windows Security under App & browser control > Reputation-based protection > Phishing protection will see a UI warning on unsafe password copy and paste, just as they currently see when they type in their password.

FEEDBACK: Please file feedback in Feedback Hub (WIN + F) under Security and Privacy > Microsoft Defender SmartScreen.

Local File Sharing Improvements

We have made some improvements to the built-in Windows share window and nearby sharing for sharing local files from your PC.

Those improvements include:

As a reminder, these experiences will work for sharing local files from the desktop, File Explorer, Photos, Snipping Tool, Xbox, and other apps that use the built-in Windows share window.

FEEDBACK: Please file feedback in Feedback Hub (WIN + F) under Desktop Environment > Share for the Windows share window and under Desktop Environment > Nearby Sharing for nearby sharing.

The New Outlook for Windows is now an inbox app

Starting with this build, the new Outlook for Windows Preview is now an inbox app. With the new Outlook for Windows, you can connect work and personal emails, calendars, and contacts in one secure place. Learn about the new Outlook for Windows here and the most recent set of updates for Insiders here. You can click here to learn more about the future of Mail and Calendar in Windows.

Post-OOBE Experiences

We are trying out several new experiences for after completing OOBE (“out of box experience”) starting with this build. You may see one of these three experiences launched automatically on your device after completing OOBE.

These experiences will help you learn about new features in Windows 11 and help you complete your device setup. These experiences will only be available to a small subset of Insiders in the Dev Channel at first and you may see different variations of these experiences.

FEEDBACK: Please file feedback in Feedback Hub (WIN + F) under Install and Update > Initial out of box setup.

Changes and Improvements

[Windows Copilot]
[Voice Access]
[Backup and Restore]

For developers

You can download the latest Windows Insider SDK at

SDK NuGet packages are now also flighting at NuGet Gallery | WindowsSDK which include:

These NuGet packages provide more granular access to the SDK and better integration in CI/CD pipelines.

SDK flights are now published for both the Canary and Dev Channels, so be sure to choose the right version for your Insider Channel.

Remember to use adaptive code when targeting new APIs to make sure your app runs on all customer machines, particularly when building against the Dev Channel SDK. Feature detection is recommended over OS version checks, as OS version checks are unreliable and will not work as expected in all cases.

About the Dev Channel

REMINDER: The Dev Channel has been rebooted. Windows Insiders who were in the Dev Channel on 25000 series builds have been moved to the new Canary Channel. Going forward, the Dev Channel will receive 23000 series builds. Insiders who were moved to the Canary Channel and want to move back to the Dev Channel can follow these instructions to do a clean installation of Windows 11 and then re-join the Dev Channel to receive 23000 series builds.

The Dev Channel receives builds that represent long lead work from our engineers with features and experiences that may never get released as we try out different concepts and get feedback. It is important to remember that the builds we release to the Dev Channel should not be seen as matched to any specific release of Windows and the features included may change over time, be removed, or replaced in Insider builds or may never be released beyond Windows Insiders to general customers. For more information, please read this blog post about how we plan to use the Dev Channel to incubate new ideas, work on long lead items, and control the states of individual features.

In some cases, features and experiences may go out to the Canary Channel first before going out to the Dev Channel however the Dev Channel will provide better platform stability. As we get closer to shipping, some features and experiences will also make their way to the Beta Channel when they are ready.

The desktop watermark you see at the lower right corner of your desktop is normal for these pre-release builds.

Important Insider Links

Before you update your machine, visit the Announcing Windows 11 Insider Preview Build 23506 | Windows Insider Blog today to view full details on new features, general changes, improvements, known issues and much more!