Microsoft releases Windows preview Build 25381 update to improve security and stability

News on June 3, Microsoft today released a Canary preview Build for Windows Insider members 25381 updated. This update brings a series of new features and improvements to further improve the security and stability of the Windows operating system.

According to the editor’s understanding, an important new feature of this update is the change to SMB signature requirements. From Windows 11 Insider Preview Build Starting from 25381 Enterprise Edition, all connections require SMB signature by default. Previously, in Windows In 10 and 11, SMB signing is required by default only when connecting to shares named SYSVOL and NETLOGON, while Active Directory domain controllers require SMB signing on any client connection. Microsoft says the change is to improve Windows and Windows Server security in modern environments. Note that while all versions of Windows and Windows Servers all support SMB signing, but third parties may disable or not support this feature. Users may receive a series of error messages if they try to connect to a remote share on a third-party SMB server that does not allow SMB signing.

Additionally, this update also brings an improvement that when a camera streaming issue is detected, a dialog box will pop up advising the user to launch the Automatically Get Help troubleshooter to resolve the issue. If the camera won't start or the shutter is off, tips and suggestions on how to fix the problem will be provided to help users quickly diagnose the issue.

It is worth noting that Microsoft’s Canary preview version is an early experimental version of the system, mainly used for testing various new features and improvements. Due to the short testing time, this version may have various defects and problems; therefore, it is not recommended for users to upgrade on their main computers.

With this update, Microsoft has further strengthened the security of the Windows operating system and provided a better user experience. Users can get the latest Canary preview version by joining the Windows Insider Program, and participate in testing and feedback, thus contributing to Microsoft's improvement and optimization of products.

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