Disable SMB Signing

Disable SMB Signing

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Disabling SMB (Server Message Block) signing can be necessary in environments where compatibility with third-party servers or guest access is required. However, this reduces security and should only be done with caution. Below are methods to disable SMB signing.

Using Group Policy

  • Open the Local Group Policy Editor: Press Win + R, type gpedit.msc, and press Enter.

  • Navigate to:

Computer Configuration > Windows Settings > Security Settings > Local Policies > Security Options

  • Locate the following policies: Microsoft network client: Digitally sign communications (always) Microsoft network server: Digitally sign communications (always)

  • Set both policies to Disabled.

  • Restart the system or run gpupdate /force in Command Prompt to apply changes.

Using PowerShell

  • Open an elevated PowerShell window.

  • Run the following commands to disable SMB signing:

# Disable SMB client signing
Set-SmbClientConfiguration -RequireSecuritySignature $false

# Disable SMB server signing
Set-SmbServerConfiguration -RequireSecuritySignature $false

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