Expand the GPO section Computer Configuration -> Preferences -> Windows Settings -> Registry Open the Group Policy Management console (gpmc.msc), create a new GPO ( disableSMBv1) and link it to the OU containing the computers on which we want to disable SMB1.Since there is no separate SMB configuration policy in the standard Windows Group Policies, we have to disable it through the registry policy. In an Active Directory domain environment, we can disable SMBv1 on all servers and computers using Group Policies (GPOs).
On Windows 7/8 and Windows Server 2008 R2/2012, in order to disable the SMB 1.0 client, we need to disable the service and the SMBv1 access driver with the commands: sc.exe config lanmanworkstation depend= bowser/mrxsmb20/nsiĭisabling SMBv1 Client and Server via Group Policy In the same way, to enable SMBv1 support on the server, we run the command: Set-SmbServerConfiguration -EnableSMB1Protocol $True -Force We make sure using, Get-SmbServerConfiguration cmdlet To disable SMBv1 server support in Windows Server, we run the PowerShell command: Set-SmbServerConfiguration -EnableSMB1Protocol $false -Force “EnableSMB1Protocol: True” means we have access to shared folders on this server using the SMBv1 protocol. Similarly, to uninstall the SMBv1 client feature (requires a reboot), run: Uninstall-WindowsFeature –Name FS-SMB1 –RemoveĪnother PowerShell command that removes the SMB1Protocol feature is: Disable-WindowsOptionalFeature -Online -FeatureName SMB1Protocol -Removeįor the server to handle SMBv1.0 client access, enable SMBv1 support at the SMB file server level in addition to the FS-SMB1 component.įurthermore, to check, run: Get-SmbServerConfiguration
To install the FS-SMB1 feature, run: Install-WindowsFeature FS-SMB1 It is possible either by using Server Manager or through PowerShell.Ĭheck if SMBv1 is enabled using the PowerShell command: Get-WindowsFeature | Where-Object | ft Name,Installstate To enable support for the SMBv1 client protocol in newer versions of Windows Server, we install separate SMB 1.0/CIFS File Sharing Support feature.
We have to find this computer or device on the network and update the OS or firmware to a version that supports newer SMB protocol versions.Įnable/Disable SMB v 1.0 in Windows Server 2016/2019 To stop auditing SMB1 access, use the Windows PowerShell cmdlet Set-SmbServerConfiguration. This event indicates that a client attempted to access the server using SMB1. The event indicates that the client 192.168.1.10 is trying to access the server using the SMB1 protocol SMB1 access Here, an event with EventID 3000 from the SMBServer source is seen in the log. To display the list of events from this event log we use the command: Get-WinEvent -LogName Microsoft-Windows-SMBServer/Audit Check if any clients has access to the file server over SMB1. To do this, we enable the audit of file server access over SMB v1.0 using the following PowerShell command: Set-SmbServerConfiguration –AuditSmb1Access $trueĪlso, after a couple of days, we open the Event Viewer on the server and check the log in Applications and Services -> Microsoft -> Windows -> SMBServer -> Audit. Auditing Shared Folder Access via SMB v1.0 If there are no such clients in the network, we can completely disable SMB 1.0 on the side of file servers and client desktops.īefore enabling or disabling the SMB 1.0 driver, we make sure that there are no legacy clients that uses it in the network. On the other hand, old client versions can access network shared folders only by using SMB v1.0 protocol. As a result, the devices will use new, more efficient, secure and functional versions of the SMB protocol when accessing network shares.By disabling SMB 1.0, we protect Windows computers from a wide range of vulnerabilities in this legacy protocol.If there are no SMB 1.x clients left, we completely disable SMBv1 on all Windows devices.The Server Message Block 1.0 (SMBv1) network protocol is disabled by default in Windows Server 2016/2019 and Windows 10. Why is Server Message Block 1.0 (SMBv1) network protocol disabled by default? Today, let’s see how our Support Engineers Enable/Disable SMB v 1.0 in Windows.
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