[cifs-protocol] When will clients/applications do a smb2 session reauth

Sreekanth Nadendla srenaden at microsoft.com
Fri Apr 27 08:15:09 MDT 2012

Hello  Stefan,
                      Thank you for your inquiry about file sharing protocols. One of the Open specifications team member will contact you soon.

Sreekanth Nadendla
Microsoft Windows Open Specifications

-----Original Message-----
From: Stefan (metze) Metzmacher [mailto:metze at samba.org] 
Sent: Friday, April 27, 2012 7:35 AM
To: Interoperability Documentation Help
Cc: cifs-protocol at cifs.org; pfif at tridgell.net; Christian Ambach
Subject: When will clients/applications do a smb2 session reauth


with SMB 2.1 (and higher) it's possible to do a session re-authentication without getting a STATUS_NETWORK_SESSION_EXPIRED. With SMB 2.0 STATUS_REQUEST_NOT_ACCEPTED is returned.

In what situations do clients do a (pro active) reauthentication without getting STATUS_NETWORK_SESSION_EXPIRED from the server?

" Application Requests Reauthenticating a User"
is the related section in [MS-SMB2].

What layers in the client use this feature?
How can I trigger this?

Is the reauthentication only used with the same user account or also to switch a session to a different user (which is possible)?

BTW: is there a reason why <dochelp at winse.microsoft.com> doesn't work anymore?


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