Windows 8 and Windows Server 2012

Windows 8 and Windows Server 2012 introduce the new Set-SMBServerConfiguration Windows PowerShell cmdlet. The cmdlet enables you to enable or disable the SMBv1, SMBv2, and SMBv3 protocols on the server component.

Notes When you enable or disable SMBv2 in Windows 8 or in Windows Server 2012, SMBv3 is also enabled or disabled. This behavior occurs because these protocols share the same stack.

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You do not have to restart the computer after you run the Set-SMBServerConfiguration cmdlet.

1-To obtain the current state of the SMB server protocol configuration, run the following cmdlet:

Get-SmbServerConfiguration | Select EnableSMB1Protocol, EnableSMB2Protocol

2- To disable SMBv1 on the SMB server, run the following cmdlet:

Set-SmbServerConfiguration -EnableSMB1Protocol $false

3- To disable SMBv2 and SMBv3 on the SMB server, run the following cmdlet:

Set-SmbServerConfiguration -EnableSMB2Protocol $false

4- To enable SMBv1 on the SMB server, run the following cmdlet:

Set-SmbServerConfiguration -EnableSMB1Protocol $true

5- To enable SMBv2 and SMBv3 on the SMB server, run the following cmdlet:

Set-SmbServerConfiguration -EnableSMB2Protocol $true

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Windows 7, Windows Server 2008 R2, Windows Vista, and Windows Server 2008

To enable or disable SMB protocols on an SMB Server that is running Windows 7, Windows Server 2008 R2, Windows Vista, or Windows Server 2008, use Windows PowerShell or Registry Editor.

Windows PowerShell 2.0 or a later version of PowerShell

1- To disable SMBv1 on the SMB server, run the following cmdlet:

Set-ItemProperty -Path "HKLM:\SYSTEM\CurrentControlSet\Services\LanmanServer\Parameters" SMB1 -Type DWORD -Value 0 -Force

2-To disable SMBv2 and SMBv3 on the SMB server, run the following cmdlet:

Set-ItemProperty -Path "HKLM:\SYSTEM\CurrentControlSet\Services\LanmanServer\Parameters" SMB2 -Type DWORD -Value 0 -Force

3- To enable SMBv1 on the SMB server, run the following cmdlet:

Set-ItemProperty -Path "HKLM:\SYSTEM\CurrentControlSet\Services\LanmanServer\Parameters" SMB1 -Type DWORD -Value 1 -Force

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4-To enable SMBv2 and SMBv3 on the SMB server, run the following cmdlet:

Set-ItemProperty -Path "HKLM:\SYSTEM\CurrentControlSet\Services\LanmanServer\Parameters" SMB2 -Type DWORD -Value 1 -Force

Note You must restart the computer after you make these changes.

Registry Editor

Important This article contains information about how to modify the registry. Make sure that you back up the registry before you modify it. Make sure that you know how to restore the registry if a problem occurs. For more information about how to back up, restore, and modify the registry, click the following article number to view the article in the Microsoft Knowledge Base:

322756 How to back up and restore the registry in Windows

To enable or disable SMBv1 on the SMB server, configure the following registry key:

Registry subkey: HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\LanmanServer\ParametersRegistry entry: SMB1

REG_DWORD: 0 = Disabled

REG_DWORD: 1 = Enabled

Default: 1 = Enabled

To enable or disable SMBv2 on the SMB server, configure the following registry key:

Registry subkey:HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\LanmanServer\ParametersRegistry entry: SMB2

REG_DWORD: 0 = Disabled

REG_DWORD: 1 = Enabled

Default: 1 = Enabled

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Article source:

https://support.microsoft.com/en-us/help/2696547/how-to-enable-and-disable-smbv1-smbv2-and-smbv3-in-windows-and-windows