Insider Preview Build 16226 for PC introduces changes to the SMB1 networking protocol

Michelle Fleming

Insider Preview Build 16226 for PC introduces chan...

Hello Insiders!


Build 16226 is chock full of goodness with some very cool improvements for IT PROs!


Windows 10 and SMB1: As part of a multi-year security plan, we are removing the SMB1 networking protocol from Windows by default. This build has this change for clean installations of Windows only. We made this change to reduce the attack surface of the OS.


More details:

  • All Home and Professional editions now have the SMB1 server component uninstalled by default.
  • The SMB1 client remains installed. This means you can connect to devices from Windows 10 using SMB1, but nothing can connect to Windows 10 using SMB1. We still recommend you uninstall SMB1 if you are not using it. In a later feature update of Windows 10, we may uninstall SMB1 client if we detect that you are not using it.
  • All Enterprise and Education editions have SMB1 totally uninstalled by default.
  • The removal of SMB1 means the removal of the legacy Computer Browser service. The Computer Browser depends exclusively on SMB1 and cannot function without it.

For more information on why SMB1 is being removed, see: https://aka.ms/stopusingsmb1

For more information on software and devices that require SMB1, see https://aka.ms/stillneedssmb1


Hyper-V Improvements:

Share your VMs with ease with the new VM Sharing feature! In today's build you'll find a new icon in Virtual Machine Connection that will compress your VM into a ".vmcz" file. Double click this file on your destination machine to start importing the VM - easy as that!



Check out what's new to experience and socialize about in the links below:

And in the words of our fearless leader, Dona Sarkar, "Keep Hustlin'.  No downtime for Hustle-As-A-Service!"


3 Replies

Re: Insider Preview Build 16226 for PC introduces ...

Is there a tool that can be built to help the consumers/smb customers to identify if they will be impacted by this change?  Already folks have tried to disable smbv1 and found too many of their home items fail to work -- i.e. Sonos speakers, NAS units, etc.  I found that there's no one powershell command to determine what SMBvism is being used.

RE: Insider Preview Build 16226 for PC introduces ...

Hi Susan, I'm looking into this for you.

RE: Insider Preview Build 16226 for PC introduces ...

Estou com alguns erros na loja do windows!
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