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The introduction of alternative ports for SMB is a crucial step in Microsoft’s Secure Future Initiative, offering administrators more control over network security and access management.

With SMB over QUIC client access control, administrators can enforce stricter security policies while maintaining seamless remote file access.

This guide provides a comprehensive walkthrough for configuring and testing SMB over QUIC, enabling secure and seamless file access across untrusted networks on all editions of Windows Server 2025.

With the release of Windows Server 2025, SMB over QUIC is now available in Datacenter and Standard editions, in addition to Azure Edition. This expansion provides enterprises with a secure, VPN-less alternative for remote file access.

If your systems still rely on SMB1 / CIFS and Remote Mailslots, now is the time to upgrade. Ensure that your applications and vendors are using modern, secure alternatives to protect against threats and maintain a robust, reliable network infrastructure.

By following this guide, you can successfully configure and test SMB over QUIC on Windows Server 2022 Azure Edition, providing secure and reliable file access over untrusted networks.

Administrators can now enforce encryption for all outbound connections, ensuring that data transmitted from SMB clients is protected at all times.

Historically, the SMB client and server would negotiate the highest supported version without much administrative control. SMB dialect management, introduced in recent updates to Windows 11 and Windows Server 2025, empowers administrators to govern the versions of the SMB protocol negotiated between clients and servers.

By disabling guest authentication by default, Microsoft has taken a significant step towards enhancing network security. At Visuality Systems’ SMB protocol libraries are aligned with Microsoft’s security advancements, supporting organizations in maintaining robust network defenses.