Microsoft has recently released the Windows 11 preview build 23506 for Insiders on the Dev Channel. This build brings the Windows Copilot Preview, which started rolling out with build 23493 three weeks ago, to all Dev Channel testers. Additionally, the new web-based Outlook for Windows, set to replace the Windows 11 Mail and Calendar apps in 2024, is now available as an inbox app in this build.

In this build, there are a few other new features, as well as a notable removal. Microsoft has temporarily disabled the new Settings homepage that debuted last month alongside the Windows Copilot preview due to stability issues. The Windows Insider team plans to re-enable and roll out this feature again once the bug is fixed in a future flight.

One of the main new features in build 23506 is the passwordless experience with Windows Hello for Business. IT professionals now have the option to hide passwords from certain Windows authentication scenarios on Azure AD joined devices using a new policy.

There is also a new feature that warns users about unsafe password copy and paste attempts. Users who have enabled warning options for Enhanced Phishing Protection in Microsoft Defender SmartScreen will now see warning pop-ups when copying or pasting unsafe passwords.

Another notable addition is the redesigned Windows share window. The share window now matches the design of Windows 11 and includes a new search box, more suggestion contacts, and Outlook share support.

Select Insiders may also see new post-OOBE experiences to help them complete their device setup during the Windows 11 out-of-box experience. Additionally, the Settings > System > Power & battery > Energy recommendations page now offers two new suggestions for turning on dark mode and adjusting the refresh rate.

Finally, the 3D emoji that Microsoft previously introduced to Microsoft Teams are now available on Windows 11.

If you wish to perform a clean install of build 23506, Microsoft has made ISOs available on its website. This can be helpful if you want to test the new post-OOBE experiences and the Windows Backup app, which allows you to back up all your apps, settings, credentials, and up to 5 GB of your folders in the cloud for free.