try disabling SMB Signing on Win2k12 server

I noticed the customer has encounter the same error messages when using windows2012 connect to Isilon (link: http://social.technet.microsoft.com/Forums/windowsserver/en-US/78d2fb4d-267f-4c7b-9766-7a249b8c71cb/ws2012w8-cant-connect-to-isilon-nas-network-error-1208-helpany-ideas?forum=winserver8gen)

This problem is caused by the "Secure Negotiate" feature that was added to SMB 3.0 for Windows Server 2012 and Windows 8. This feature depends upon the correct signing of error responses by all SMBv2 servers, including servers that support only protocol versions 2.0 and 2.1. I think Dynamox provided a solution.

I enabled the EnableSecuritySignature and RequireSecuritySignature values in the Windows registry and now typing \\192.168.2.230 via Windows Explorer I can see a shared folder like this "\!" and I can't access.

What is that share?

How can I check which SMB protocol is enabled on the NAS?

I found the solution. I modified the following key:

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

Now it works.

I enabled the EnableSecuritySignature and RequireSecuritySignature values in the Windows registry and now typing \\192.168.2.230 via Windows Explorer I can see a shared folder like this "\!" and I can't access.

and that command disable secure signing