Disable SMB Signing to access NAS on Windows 11 from Group Policy

To turn off the SMB Signing feature from Group Policy on Windows 11 Pro, Enterprise, or Education, use these steps:

1. Open Start on Windows 11
2. Search for gpedit and right-click the top result to open the Group Policy Editor.
3. Open the following path:

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

4. Right-click the “Microsoft network client: Digitally sign communication (if server agrees)” policy and choose the Properties option
5. Check the Disabled option
6. 
7. Click the Apply button
8. Click the OK button
9. Restart the computer.

Once you complete the steps, the feature will be disabled, and you should be able to access the NAS without errors.

Disable SMB Signing to access NAS on Windows 11 from Command Prompt

To disable the SMB Signing feature from Command Prompt, use these steps:

1. Open Start.
2. Search for Command Prompt (or Terminal), right-click the top result, and select the Run as administrator option.
3. Type the following command to disable SMB Signing and press Enter:

   reg add "HKLM\SYSTEM\CurrentControlSet\Services\LanmanWorkstation\Parameters" /v RequireSecuritySignature /t REG_DWORD /d 0 /f

   

4. Restart the computer.

After you complete the steps, you should no longer receive error messages trying to access the file server using SMB protocol.

If you want to revert the changes, you can use the same instructions, but in step 3, run the reg add "HKLM\SYSTEM\CurrentControlSet\Services\LanmanWorkstation\Parameters" /v EnableSecuritySignature /t REG_DWORD /d 1 /f command.

Disable SMB Signing to access NAS on Windows 11 from PowerShell

To disable the SMB Signing feature on Windows 11, use these steps:

1. Open Start.
2. Search for PowerShell (or Terminal), right-click the top result, and select the Run as administrator option.
3. Type the following command to disable SMB Signing and press Enter:

   Set-SmbClientConfiguration -RequireSecuritySignature $false

   

4. Type “Y” and press Enter to apply the changes.
5. (Optional) Type the following command to confirm the SMB Signing status on Windows 11 and press Enter:

   Get-SmbClientconfiguration | Format-List EnableSecuritySignature,RequireSecuritySignature

6. Restart the computer.

Once you complete the steps, you should now be able to access and browse and access the file server in the network without errors. If you want to revert the changes, you can use the same instructions, but in step 3, run the Set-SmbClientConfiguration -RequireSecuritySignature $true command.