You are currently offline, waiting for your internet to reconnect

List of currently available hotfixes for the File Services technologies in Windows Server 2012 and in Windows Server 2012 R2

Summary
This article lists the hotfixes that are currently available for users who have installed the File Services technologies on a Windows Server 2012-based computer or a Windows Server 2012 R2-based computer. File Services provides technologies that help you manage storage, enable file replication, manage shared folders, provide fast file searching, and enable access for UNIX client computers. This article also lists the hotfixes that are currently available for users who use File Services on Windows 8-based computers or Windows 8.1-based computers. 
INTRODUCTION
This article contains lists of Microsoft Knowledge Base articles that describe the currently available fixes. The article is divided into two sections. The first section applies to Windows Server 2012 and to Windows 8, and the second section applies to Windows Server 2012 R2 and to Windows 8.1. Each section is divided into subsections for different component drivers: SRV, MRXSMB, and RDBSS. In general, the SRV drivers should be updated on the server or client computer that is hosting the data. The MRXSMB and RDBSS drivers should be updated on the server or client computer that is initiating access to the data. If you are unsure about which component should be updated on which computer, you can update all three component drivers on both the computer that is hosting the data and the computer that is accessing the data.

Windows Server 2012 and Windows 8

NTFS component
Date addedKnowledge Base ArticleTitleWhy we recommend this hotfixHotfix type and availability
 08-Oct-20142996802TRIM and UNMAP activities for thin provisioning on one volume block all activities on other volume
This hotfix contains the most current version of ntfs.sys.
To apply this hotfix, you must have Windows 8 or Windows Server 2012 installed. Available for individual download.

SRV component
Date addedKnowledge Base ArticleTitleWhy we recommend this hotfixHotfix type and availability
 11-Aug-20142984005September 2014 update rollup for Windows RT, Windows 8, and Windows Server 2012
This update rollup contains the most current version of srvnet.syssrvsvc.dll.To apply this update rollup, you must have Windows 8, or Windows Server 2012 installed.
 05-Mar-20152745955You cannot connect to a Windows Server-based cluster file share resource from a client computer when a cluster failover occurs

This hotfix contains the most current version of srv2.sys.To apply this hotfix, you must have Windows 8, or Windows Server 2012 installed.

MRXSMB component
Date addedKnowledge Base articleTitleWhy we recommend this hotfixHotfix type and availability
 07-Jan-20153000483MS15-011: Vulnerability in Group Policy could allow remote code execution: February 10, 2015Thissecurity hotfix contains the most current version of mrxsmb.sysTo apply this security hotfix , you must be running Windows 8 or Windows Server 2012.
  12-Jun-20153064307A memory leak occurs in the Local Security Authority Subsystem Service during a high Secure Sockets Layer workload in Windows Server 2012
This security hotfix contains the most current version of mrxsmb10.sysTo apply this security hotfix, you must be runningWindows 8 or Windows Server2012.
 01-Jul-20153076950STATUS_CONNECTION_RESET" error when an application reads a file in Windows Server 2012 R2 or Windows Server 2012
This security hotfix contains the most current version of mrxsmb20.sys.To apply this security hotfix , you must be running Windows 8 or Windows Server 2012.

RDBSS component
Date addedKnowledge Base articleTitleWhy we recommend this hotfixHotfix type and availability
 07-Jan-2015 3000483MS15-011: Vulnerability in Group Policy could allow remote code execution: February 10, 2015

This security hotfix contains the most current version of rdbss.sys.To apply this security hotfix, you must be running Windows 8 or Windows Server 2012.

Windows Server 2012 R2 and Windows 8.1

NTFS component
Date addedKnowledge Base ArticleTitleWhy we recommend this hotfixHotfix type and availability
15-Oct-20143000850November 2014 update rollup for Windows RT 8.1, Windows 8.1, and Windows Server 2012 R2


This update rollup contains the most current version of ntfs.sys. To apply this update rollup, you must be running Windows 8.1 or Windows Server 2012 R2 and April 2014 Update 2919355.

SRV component
Date addedKnowledge Base ArticleTitleWhy we recommend this hotfixHotfix type and availability
 05-Apr-20142975719August 2014 update rollup for Windows RT 8.1, Windows 8.1, and Windows Server 2012 R2
This update rollup contains the most current version of srvnet.sys.To apply this update rollup, you must be running Windows 8.1 or Windows Server 2012 R2 and April 2014 Update 2919355.
 16-Jul-20142975719August 2014 update rollup for Windows RT 8.1, Windows 8.1, and Windows Server 2012 R2
This update rollup contains the most current version of srv.sys.To apply this update rollup, you must be running Windows 8.1 or Windows Server2012 R2 and April 2014 Update 2919355.
 01-Aug-20153025091Shared Hyper-V virtual disk is inaccessible when it's located in Storage Spaces on a Windows Server 2012 R2-based computer

This update rollup contains the most current version of srv2.sys.To apply this hotfix, you must be running Windows 8.1 or Windows Server 2012 R2 and April 2014 Update 2919355.

MRXSMB component
Date addedKnowledge Base articleTitleWhy we recommend this hotfixHotfix type and availability
 01-Aug-20153025091Shared Hyper-V virtual disk is inaccessible when it's located in Storage Spaces on a Windows Server 2012 R2-based computer

This security hotfix contains the most current version of mrxsmb.sysmrxsmb20.sys.Toapply this hotfix, you must be running Windows 8.1 or Windows Server2012 R2 and April 2014 Update 2919355.
10-Jan-20153000483MS15-011: Vulnerability in Group Policy could allow remote code execution: February 10, 2015

This security hotfix contains the most current version of mrxsmb10.sys.To apply this security hotfix, you must be running Windows 8.1 or Windows Server2012 R2 and April 2014 Update 2919355.

RDBSS component
Date addedKnowledge Base articleTitleWhy we recommend this hotfixHotfix type and availability
 07-Jan-20153000483MS15-011: Vulnerability in Group Policy could allow remote code execution: February 10, 2015
This security hotfix contains the most current version of rdbss.sys.To apply this security hotfix, you must be running Windows 8.1 or Windows Server 2012 R2 and April 2014 Update 2919355.
More information

Registry keys that have been introduced with hotfixes or security updates

Windows Server 2012 and R2
DateKnowledge Base articleRegistry key
06/10/20132848322HKEY_LOCAL_MACHINE\System\CurrentControlSet\Services\LanmanServer\Parameters\AsynchronousCredits
HKEY_LOCAL_MACHINE\System\CurrentControlSet\Services\LanmanWorkstation\Parameters\ExtendedSessTimeout

Services for Network File System (NFS) in a Windows Server 2012 environment

NFS Server components 2012

Date addedKnowledge Base articleTitleWhy we recommend this hotfixHotfix type and availability
08-Nov-20122782419Windows 8 and Windows Server 2012 update rollup: December 2012This update rollup contains the most current version of Nfssvc.exe
and Msnfsflt.sys.
(GDR/LDR)
To apply this update rollup, you must be running Windows 8 or Windows Server 2012
 13-Apr-20153056053Snapshot contents are not accessible when Server for NFS has handle signing enabled

This hotfix contains the most current version ofNfssvr.sys

(GDR/LDR)
To apply this update rollup, you must be running Windows 8 or Windows Server 2012

NFS Client components 2012, Windows 8.0
 

Date addedKnowledge Base articleTitleWhy we recommend this hotfixHotfix type and availability
This hotfix contains the most current version of Nfsnp.dll.
 18-Dec-20143025097"Invalid device" error when you try to rename a file on a Network File System client that is running Windows 8, Windows 8.1, Windows Server 2012, or Windows Server 2012 R2
This hotfix contains the most current version of Nfsclnt.exe and Nfsrdr.sys.To apply this hotfix, you must be running Windows 8 or Windows Server 2012
 08-Aug-20142990830The Psxss.exe process stops intermittently on a server that is running Windows Server 2012
This hotfix contains the most current version of Psxdll.dll, Psxdllsvr.dll, Psxss.exe, Posix.exe. To apply this hotfix, you must be running Windows 8 or Windows Server 2012

Services for Network File System (NFS) in a Windows Server 2012 R2 environment

NFS Server components 2012 R2
Date addedKnowledge Base articleTitleWhy we recommend this hotfixHotfix type and availability
11-Apr-20153056053Snapshot contents are not accessible when Server for NFS has handle signing enabled
This security update contains the most current version of Nfssvc.exe and Nfssvr.sys
and Msnfsflt.sys.
To apply this rollup, you must be running Windows 8.1 or Windows Server 2012 R2 and April 2014 Update 2919355.

This hotfix contains the most current version of Rpcxdr.sys.

NFS Client components 2012 R2, Windows 8.1

07-Jan-2015
3025097 "Invalid device" error when you try to rename a file on a Network File System client that is running Windows 8, Windows 8.1, Windows Server 2012, or Windows Server 2012 R2
http://support.microsoft.com/kb/3025097/EN-US


.

Windows Server 2012 R2
DateKnowledge Base articleRegistry key
 none

The Server Message Block (SMB) model consists of two entities: the client and the server.

On the client, applications perform system calls by requesting operations on remote files. These requests are handled by the redirector subsystem (rdbss.sys) and by the SMB mini-redirector (mrxsmb.sys), both of which translate the requests into SMB protocol sessions and requests over TCP/IP. Starting with Windows Vista, the SMB 2.0 protocol is supported. The mrxsmb10.sys driver handles legacy SMB traffic, and the mrxsmb20.sys driver handles SMB 2.0 and SMB 3.0 traffic.

On the server, SMB connections are accepted, and SMB requests are processed as local file system operations through NTFS and the local storage stack. The srv.sys driver handles legacy SMB traffic, and the srv2.sys driver handles SMB 2.0 traffic. The srvnet.sys component implements the interface between networking and the file server for both SMB protocols. File system metadata and content can be cached in memory via the system cache in the kernel (ntoskrnl.exe).

Figure 1 provides an overview of the different layers through which a user request on a client computer must go to perform file operations over the network on a remote SMB file server by using SMB 2.0.

Figure 1. Windows SMB components

Services for Network File System (NFS) in a Windows Server 2012 environment

Services for NFS includes the following components:
  • Server for NFS

    This component corresponds to the server-side implementation of the NFS file-sharing protocol. Server for NFS enables a computer that is running Windows Server 2012 or Windows Server 2012 R2 to act as a file server for UNIX-based client computers.
  • Client for NFS

    This component corresponds to the client-side implementation of the NFS file-sharing protocol. Client for NFS enables a Windows-based computer that is running Windows Server 2012 (or Windows 8) to access files that are stored on a UNIX-based NFS server.
Windows Server 2012 includes both the Server for NFS and Client for NFS components. However, Windows 8 includes only Client for NFS.

For more information and a step-by-step guide for the services for NFS, go to the following Microsoft website:

Microsoft Services for NFS provides a file-sharing solution for enterprises that have a mixed Windows and UNIX environment. This communication model consists of client computers and a server. Applications on the client request files that are located on the server through the redirector (Rdbss.sys) and NFS mini-redirector (Nfsrdr.sys). The mini-redirector uses the NFS protocol to send its request through TCP/IP. The server receives multiple requests from the clients through TCP/IP and routes the requests to the local file system (Ntfs.sys), which accesses the storage stack.

Figure 2 shows the communication model for NFS.

Figure 2. NFS Communications

NFS communication model
References
For more information about currently available hotfixes for the File Services technologies in Windows Server 2008 and Windows Server 2008 R2, click the following article number to go to the article in the Microsoft Knowledge Base:

2473205 List of currently available hotfixes for the File Services technologies in Windows Server 2008 and in Windows Server 2008 R2

For more information about performance tuning, see the "Tuning parameters for SMB file servers" section of the following MSDN article:

File Sharing SMB share lanmanserver lanmanworkstation SMBv1 SMBv2 SMBv3 CIFS SMB1 SMB2 SMB3
Properties

Article ID: 2899011 - Last Review: 09/11/2015 19:11:00 - Revision: 40.0

  • Windows Server 2012 Datacenter
  • Windows Server 2012 Essentials
  • Windows Server 2012 Foundation
  • Windows Server 2012 R2 Datacenter
  • Windows Server 2012 R2 Essentials
  • Windows Server 2012 R2 Foundation
  • Windows Server 2012 R2 Standard
  • Windows Server 2012 Standard
  • Windows 8 Enterprise
  • Windows 8 Pro
  • Windows 8.1 Enterprise
  • Windows 8.1 Pro
  • KB2899011
Feedback