Recently some users reported that theycannot access NAS with SMB in Windows 11 24H2.

What are the reasons behind this situation?

What should you do if you hit an SMB signing error to access NAS on Windows 11 24H2?

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Keep reading thisMiniToolguide for details.

One of them is to force all SMB connections to have SMB signing enabled.

This may cause you to be unable to access NAS after installing Windows 11 24H2.

disable the Microsoft network client: Digitally sign communications (always) option in the Local Group Policy Editor

However, the resulting inability to get into the NAS is also very annoying.

Therefore, you gotta consider carefully before proceeding.

Press theWindows + Rkey combination to fire up the Run window.

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In the new window, typegpedit.mscand pressEnteror clickOK.

Scroll down to find and double-clickMicrosoft internet client: Digitally sign communications (always).

In the pop-up window, select theDisabledoption.

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HitApply>OKto save the change.

After that, you could cycle your box and verify if the SMB signing error has been fixed.

Here are the methods to fix it.

Fix 2.

Go to this path:Computer Configuration>Administrative Templates>web link>Lanman Workstation.

Double-choose theEnable insecure guest logonsoption.

Select theEnabledoption, and then clickApplyandOKsequentially.

Reboot your machine and verify if the issue has been resolved.

Fix 3.

Turn off SMB Client Signing With PowerShell (for Windows 11 Home)

Step 1.

TypePowerShellin the Windows search box on your taskbar.

Hit theRun as administratoroption under theWindows PowerShellsection.

TypeYto confirm the operation.

Input the following command and pressEnterto disable guest fallback:

Set-SmbClientConfiguration -EnableInsecureGuestLogons $true

Step 6.