Category Archives: SMB/CIFS

NetApp CIFS shares not mounting to Windows Server 2012

The Scenario:

I have created a NetApp CIFS share that needs to be accessible on Server 2003, 2008R2 and 2012R2 servers.

The Problem:

The NetApp CIFS share connects fine on a Windows Server 2003 or 2008 machine, but when I tried on a Server 2012 R2 it wouldn’t connect and I’d get the following error:

CIFS_share

The Solution:

The NetApp Filer had digital signing set to off, whereas Windows Server 2012 requires it by default. This mismatch causes the share failure. I was unable to enable digital signing on the NetApp due to the potential performance degradation it would have caused so the other option was to disable the digital signing requirement on Windows.

In an elevated PowerShell terminal type:

Set-ItemProperty -Path “HKLM:\SYSTEM\CurrentControlSet\Services\LanmanWorkstation\Parameters” RequireSecureNegotiate -Value 0 -Force

No reboot is required.

Disclaimer: provided “AS IS” with no warranties and confer no rights