Win11 Insider Preview Build 25931 released with improved DC locator algorithm

php Editor Banana Win11 Insider Preview Build 25931 was recently released. This update mainly improves the DC locator algorithm to provide users with more accurate positioning services. This is the latest preview version of the Win11 system, which brings a series of optimizations and improvements to further improve the stability and performance of the system. The improvement of the DC locator algorithm will provide users with more accurate and faster positioning results when using positioning services, bringing more convenience to users' daily lives. For specific update content and details, please visit the official website.

Win11 25931 update content:

New features in build 25931

New features in the development channel

This version adds some new features from the development channel, such as support for Unicode Emoji 15 and the ability to use voice access in more areas in Windows (such as the lock screen).

DC locations will no longer use NetBIOSWINSmailslot-based discovery by default

We have previously announced the deprecation of Windows Internet Name Service (WINS) and remote mailslots. These technologies are outdated and present security risks in the current environment. To accommodate these changes, we have made two improvements to the DC locator algorithm in Windows. First, we fixed an issue where many legacy applications still used short NetBIOS-style domain names when locating domain controllers (DCs). By introducing smarter logic into the DC locator, we are able to more accurately resolve and locate domain controllers, thereby improving system performance and security. Second, we realize that deprecating these older technologies may have an impact on the location of DCs in the environment. To ensure a smooth transition, we are providing tools and resources to help administrators and developers migrate their applications and systems. These resources include documentation, guidance, and technical support to help users understand and respond to these changes. We are committed to providing a safer, more modern environment that meets the needs of our users. By deprecating outdated technology and improving the DC locator algorithm, we are able to ensure the stability and security of the system and provide a better experience for users. We encourage users to migrate and upgrade promptly to take advantage of these improvements and new features.

First of all, we disable the use of DC discovery methods based on NetBIOS/WINS mailslots by default. However, if you need to restore this behavior, you can do so by using a new Group Policy setting (BlockNetBIOSDiscovery). In addition to disabling the BlockNetBIOSDiscovery policy, the EnableMailslots SMB configuration option needs to be enabled to revert to default behavior. (You can use the Get-SmbClientConfiguration and Set-SmbClientConfiguration PowerShell cmdlets to query and set the EnableMailslots configuration.)

Please note: Recovery should only be considered a temporary measure while more feasible, longer-term solutions are explored plan.

#Screenshot of the DC Locator Domain Name Mapping property page in the Active Directory Domains and Trusts snap-in.

More information about DC locator changes can be found here.

Changes and Improvements

[General]

Insider Preview Build Expiration: Starting with Build 25931, the expiration date for Insider Preview builds published to the Canary Channel has been updated as of 9/15/2024. Please make sure you have updated to the latest version in the Canary channel.

In addition to the Camera app and Cortana, you can also uninstall the Photos app, People app, and Remote Desktop (MSTSC) client.

[File Manager]

Added more fields to display in the details pane, including image dimensions for pictures, number of pages in .docx, used space on the drive, and Available information and more.

[Dynamic Lighting]

Now you can use the Match My Windows Accent Color toggle under Dynamic Lighting Effects to instantly change your Windows accent color by going to Settings > Personalization > Dynamic Lighting. Sync with devices around you.

[Windows Spotlight]

After an operating system update, in some cases - such as using the default Windows 11 background or solid color - Windows Spotlight may be enabled for you. If you decide you don't want Windows Spotlight enabled, you can turn it off, and it shouldn't be enabled again for you in a future operating system update unless you choose to re-enable the experience.

Fixing Known Issues

We fixed a major issue where you can no longer connect to third-party storage devices via SMB using guest (no username or password) credentials.

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