Cannot mount win server 2016 share using cifs module + smb vers=3.1.1

Stefan Metzmacher metze at
Mon Aug 17 16:41:08 UTC 2015

Hi Aurélien,

> On Mon, 17 Aug 2015 15:59:41 +0200 Aurélien Aptel <aaptel at>
> wrote:
>> In both case it errs after the tree connect request. Not sure how to
>> proceed.
> This might have to do with the "Secure Negotiate" feature [1] which
> cannot be disabled on windows server 2016 [2].

The tree connect needs to be signed or encrypted in SMB 3.1.1 when
the session is authenticated and not anonymous.

This makes sure the secure negotiation is complete, which means client
and server have negotiated signing/encryption keys and verified the whole


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