You experience low performance when you access many small files on an SMB version 1 protocol-enabled remote server from a Windows Vista or Windows Server 2008-based client computer

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Article ID: 981964 - View products that this article applies to.
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SYMPTOMS

You have a client computer that is running Windows Vista or Windows Server 2008. You use this computer to access a remote server that has the Server Message Block (SMB) version 1 protocol enabled. When you access many small files on the remote server over a network that has high latency, you experience low performance on the computer.

Note SMB is more frequently known as Common Internet File System (CIFS).

RESOLUTION

Hotfix information

A supported hotfix is available from Microsoft. However, this hotfix is intended to correct only the problem that is described in this article. Apply this hotfix only to systems that are experiencing the problem described in this article. This hotfix might receive additional testing. Therefore, if you are not severely affected by this problem, we recommend that you wait for the next software update that contains this hotfix.

If the hotfix is available for download, there is a "Hotfix download available" section at the top of this Knowledge Base article. If this section does not appear, contact Microsoft Customer Service and Support to obtain the hotfix.

Note If additional issues occur or if any troubleshooting is required, you might have to create a separate service request. The usual support costs will apply to additional support questions and issues that do not qualify for this specific hotfix. For a complete list of Microsoft Customer Service and Support telephone numbers or to create a separate service request, visit the following Microsoft Web site:
http://support.microsoft.com/contactus/?ws=support
Note The "Hotfix download available" form displays the languages for which the hotfix is available. If you do not see your language, it is because a hotfix is not available for that language.

Prerequisites

To apply this hotfix, your computer must be running one of the following operating systems:
  • Windows Vista Service Pack 1 (SP1)
  • Windows Vista Service Pack 2 (SP2)
  • Windows Server 2008
  • Windows Server 2008 Service Pack 2 (SP2)
For more information about how to obtain a Windows Vista service pack, click the following article number to view the article in the Microsoft Knowledge Base:
935791 How to obtain the latest Windows Vista service pack
For more information about how to obtain a Windows Server 2008 service pack, click the following article number to view the article in the Microsoft Knowledge Base:
968849 How to obtain the latest service pack for Windows Server 2008

Registry information

To use the hotfix in this package, you do not have to make any changes to the registry.

Restart requirement

You must restart the computer after you apply this hotfix.

Hotfix replacement information

This hotfix does not replace a previously released hotfix.

File information

The English (United States) version of this hotfix installs files that have the attributes that are listed in the following tables. The dates and the times for these files are listed in Coordinated Universal Time (UTC). The dates and the times for these files on your local computer are displayed in your local time together with your current daylight saving time (DST) bias. Additionally, the dates and the times may change when you perform certain operations on the files.
Windows Vista and Windows Server 2008 file information notes
Important Windows Vista hotfixes and Windows Server 2008 hotfixes are included in the same packages. However, only "Windows Vista" is listed on the Hotfix Request page. To request the hotfix package that applies to one or both operating systems, select the hotfix that is listed under "Windows Vista" on the page. Always refer to the "Applies To" section in articles to determine the actual operating system that each hotfix applies to.
  • The files that apply to a specific product, SR_Level (RTM, SPn), and service branch (LDR, GDR) can be identified by examining the file version numbers as shown in the following table.
    Collapse this tableExpand this table
    VersionProductSR_LevelService branch
    6.0.600 1 . 22xxxWindows Vista and Windows Server 2008SP1LDR
    6.0.600 2 . 22xxxWindows Vista and Windows Server 2008SP2LDR
  • Service Pack 1 is integrated into the release version of Windows Server 2008. Therefore, RTM milestone files apply only to Windows Vista. RTM milestone files have a 6.0.0000.xxxxxx version number.
  • The MANIFEST files (.manifest) and the MUM files (.mum) that are installed for each environment are listed separately in the "Additional file information for Windows Server 2008 and for Windows Vista" section. MUM files and MANIFEST files, and the associated security catalog (.cat) files, are extremely important to maintaining the state of the updated component. The security catalog files, for which the attributes are not listed, are signed with a Microsoft digital signature.
For all supported x86-based versions of Windows Server 2008 and of Windows Vista
Collapse this tableExpand this table
File nameFile versionFile sizeDateTimePlatform
Ntkrnlpa.exe6.0.6001.226903,600,77612-May-201016:11Not Applicable
Ntoskrnl.exe6.0.6001.226903,548,55212-May-201016:11Not Applicable
Ntkrnlpa.exe6.0.6002.224033,601,79212-May-201017:19Not Applicable
Ntoskrnl.exe6.0.6002.224033,550,08012-May-201017:19Not Applicable
Rdbss.sys6.0.6001.22690225,28012-May-201013:53x86
Rdbss.sys6.0.6002.22403225,28012-May-201014:15x86
Mrxsmb10.sys6.0.6001.22690212,99212-May-201013:54x86
Mrxsmb10.sys6.0.6002.22403212,99212-May-201014:15x86
For all supported x64-based versions of Windows Server 2008 and of Windows Vista
Collapse this tableExpand this table
File nameFile versionFile sizeDateTimePlatform
Ntoskrnl.exe6.0.6001.226904,675,98412-May-201016:34x64
Ntoskrnl.exe6.0.6002.224034,688,25612-May-201017:26x64
Rdbss.sys6.0.6001.22690289,28012-May-201014:11x64
Rdbss.sys6.0.6002.22403289,28012-May-201014:24x64
Mrxsmb10.sys6.0.6001.22690273,92012-May-201014:11x64
Mrxsmb10.sys6.0.6002.22403274,43212-May-201014:24x64
For all supported IA-64-based versions of Windows Server 2008
Collapse this tableExpand this table
File nameFile versionFile sizeDateTimePlatform
Ntoskrnl.exe6.0.6001.226909,486,21612-May-201016:09IA-64
Ntoskrnl.exe6.0.6002.224039,464,20012-May-201017:20IA-64
Rdbss.sys6.0.6001.22690678,91212-May-201013:53IA-64
Rdbss.sys6.0.6002.22403679,93612-May-201014:12IA-64
Mrxsmb10.sys6.0.6001.22690657,92012-May-201013:54IA-64
Mrxsmb10.sys6.0.6002.22403658,43212-May-201014:13IA-64

STATUS

Microsoft has confirmed that this is a problem in the Microsoft products that are listed in the "Applies to" section.

MORE INFORMATION

For more information about software update terminology, click the following article number to view the article in the Microsoft Knowledge Base:
824684 Description of the standard terminology that is used to describe Microsoft software updates

Additional file information

Additional file information for Windows Vista and for Windows Server 2008

Additional files for all supported x86-based versions of Windows Vista and of Windows Server 2008
Collapse this tableExpand this table
File nameUpdate.mum
File versionNot Applicable
File size3,565
Date (UTC)13-May-2010
Time (UTC)06:11
PlatformNot Applicable
File nameX86_0da316536d5728924d573c7f801896f5_31bf3856ad364e35_6.0.6001.22690_none_fb603d73ff18db07.manifest
File versionNot Applicable
File size697
Date (UTC)13-May-2010
Time (UTC)06:11
PlatformNot Applicable
File nameX86_2aaf91e47db58cace47a86199e9d0ad8_31bf3856ad364e35_6.0.6002.22403_none_612f55ec71818013.manifest
File versionNot Applicable
File size701
Date (UTC)13-May-2010
Time (UTC)06:11
PlatformNot Applicable
File nameX86_40cbbf7aebdb7187010a44e8585fb2c7_31bf3856ad364e35_6.0.6001.22690_none_b97c0247fbddecb3.manifest
File versionNot Applicable
File size701
Date (UTC)13-May-2010
Time (UTC)06:11
PlatformNot Applicable
File nameX86_8cad0de5d34f85dccf60d3e8db19b154_31bf3856ad364e35_6.0.6002.22403_none_65cf43968fc8c546.manifest
File versionNot Applicable
File size697
Date (UTC)13-May-2010
Time (UTC)06:11
PlatformNot Applicable
File nameX86_b9a960877a73d0d7622695515389fbd8_31bf3856ad364e35_6.0.6002.22403_none_7e561ced6b7d2554.manifest
File versionNot Applicable
File size693
Date (UTC)13-May-2010
Time (UTC)06:11
PlatformNot Applicable
File nameX86_bfc0e8e953afde016d8bab7ece9d3801_31bf3856ad364e35_6.0.6001.22690_none_fe1117316696bc06.manifest
File versionNot Applicable
File size693
Date (UTC)13-May-2010
Time (UTC)06:11
PlatformNot Applicable
File nameX86_microsoft-windows-os-kernel_31bf3856ad364e35_6.0.6001.22690_none_6c58b89dcd899f6e.manifest
File versionNot Applicable
File size17,806
Date (UTC)12-May-2010
Time (UTC)17:19
PlatformNot Applicable
File nameX86_microsoft-windows-os-kernel_31bf3856ad364e35_6.0.6002.22403_none_6ea37c95ca644245.manifest
File versionNot Applicable
File size17,806
Date (UTC)12-May-2010
Time (UTC)18:27
PlatformNot Applicable
File nameX86_microsoft-windows-rdbss_31bf3856ad364e35_6.0.6001.22690_none_59fd2ec97acffc9a.manifest
File versionNot Applicable
File size6,856
Date (UTC)12-May-2010
Time (UTC)17:19
PlatformNot Applicable
File nameX86_microsoft-windows-rdbss_31bf3856ad364e35_6.0.6002.22403_none_5c47f2c177aa9f71.manifest
File versionNot Applicable
File size6,856
Date (UTC)12-May-2010
Time (UTC)18:27
PlatformNot Applicable
File nameX86_microsoft-windows-smb10-minirdr_31bf3856ad364e35_6.0.6001.22690_none_88cce28664d53a8b.manifest
File versionNot Applicable
File size7,160
Date (UTC)12-May-2010
Time (UTC)17:19
PlatformNot Applicable
File nameX86_microsoft-windows-smb10-minirdr_31bf3856ad364e35_6.0.6002.22403_none_8b17a67e61afdd62.manifest
File versionNot Applicable
File size7,160
Date (UTC)12-May-2010
Time (UTC)18:27
PlatformNot Applicable
Additional files for all supported x64-based versions of Windows Vista and of Windows Server 2008
Collapse this tableExpand this table
File nameAmd64_23edc0c0db1a6369ec0ef4f862f8b789_31bf3856ad364e35_6.0.6002.22403_none_7b2a0a3b4fa98977.manifest
File versionNot Applicable
File size697
Date (UTC)13-May-2010
Time (UTC)06:11
PlatformNot Applicable
File nameAmd64_51de044ee43e2c47ed1b483831c4393b_31bf3856ad364e35_6.0.6001.22690_none_35b174f2ad582501.manifest
File versionNot Applicable
File size705
Date (UTC)13-May-2010
Time (UTC)06:11
PlatformNot Applicable
File nameAmd64_6b7b22ca7ffd63c81c06d8bd183d2035_31bf3856ad364e35_6.0.6002.22403_none_3652ee2948a75c60.manifest
File versionNot Applicable
File size701
Date (UTC)13-May-2010
Time (UTC)06:11
PlatformNot Applicable
File nameAmd64_83a8ba6e7d617475a35d42de04e5feca_31bf3856ad364e35_6.0.6002.22403_none_60f3b6c5fad0c664.manifest
File versionNot Applicable
File size705
Date (UTC)13-May-2010
Time (UTC)06:11
PlatformNot Applicable
File nameAmd64_e1741fc109581fdd861cf90425f4245f_31bf3856ad364e35_6.0.6001.22690_none_59faec80248c9c93.manifest
File versionNot Applicable
File size697
Date (UTC)13-May-2010
Time (UTC)06:11
PlatformNot Applicable
File nameAmd64_fc931e1857c4a9d79b2b17feffc51151_31bf3856ad364e35_6.0.6001.22690_none_249e01fa67f21241.manifest
File versionNot Applicable
File size701
Date (UTC)13-May-2010
Time (UTC)06:11
PlatformNot Applicable
File nameAmd64_microsoft-windows-os-kernel_31bf3856ad364e35_6.0.6001.22690_none_c877542185e710a4.manifest
File versionNot Applicable
File size16,512
Date (UTC)12-May-2010
Time (UTC)17:49
PlatformNot Applicable
File nameAmd64_microsoft-windows-os-kernel_31bf3856ad364e35_6.0.6002.22403_none_cac2181982c1b37b.manifest
File versionNot Applicable
File size16,512
Date (UTC)12-May-2010
Time (UTC)18:30
PlatformNot Applicable
File nameAmd64_microsoft-windows-rdbss_31bf3856ad364e35_6.0.6001.22690_none_b61bca4d332d6dd0.manifest
File versionNot Applicable
File size7,113
Date (UTC)12-May-2010
Time (UTC)17:49
PlatformNot Applicable
File nameAmd64_microsoft-windows-rdbss_31bf3856ad364e35_6.0.6002.22403_none_b8668e45300810a7.manifest
File versionNot Applicable
File size7,113
Date (UTC)12-May-2010
Time (UTC)18:30
PlatformNot Applicable
File nameAmd64_microsoft-windows-smb10-minirdr_31bf3856ad364e35_6.0.6001.22690_none_e4eb7e0a1d32abc1.manifest
File versionNot Applicable
File size7,427
Date (UTC)12-May-2010
Time (UTC)17:49
PlatformNot Applicable
File nameAmd64_microsoft-windows-smb10-minirdr_31bf3856ad364e35_6.0.6002.22403_none_e73642021a0d4e98.manifest
File versionNot Applicable
File size7,427
Date (UTC)12-May-2010
Time (UTC)18:30
PlatformNot Applicable
File nameUpdate.mum
File versionNot Applicable
File size3,593
Date (UTC)13-May-2010
Time (UTC)06:11
PlatformNot Applicable
Additional files for all supported IA-64-based versions of Windows Server 2008
Collapse this tableExpand this table
File nameIa64_0b45494c5d500cc40acdfa9541cfaff5_31bf3856ad364e35_6.0.6002.22403_none_edc519f4a1686250.manifest
File versionNot Applicable
File size703
Date (UTC)13-May-2010
Time (UTC)06:11
PlatformNot Applicable
File nameIa64_233318ae6f48b826295c17ea9a2583f8_31bf3856ad364e35_6.0.6002.22403_none_0e006106300f2e6b.manifest
File versionNot Applicable
File size699
Date (UTC)13-May-2010
Time (UTC)06:11
PlatformNot Applicable
File nameIa64_3464f924a31873d129c331b2714c7b69_31bf3856ad364e35_6.0.6002.22403_none_4faec80945b8fc06.manifest
File versionNot Applicable
File size695
Date (UTC)13-May-2010
Time (UTC)06:11
PlatformNot Applicable
File nameIa64_4db90bca48eaa6d976cab9b9efb6fa00_31bf3856ad364e35_6.0.6001.22690_none_e72ccfaac12ef467.manifest
File versionNot Applicable
File size695
Date (UTC)13-May-2010
Time (UTC)06:11
PlatformNot Applicable
File nameIa64_7168058f9671564464b3f8cef801d888_31bf3856ad364e35_6.0.6001.22690_none_3fed53d384e721dc.manifest
File versionNot Applicable
File size703
Date (UTC)13-May-2010
Time (UTC)06:11
PlatformNot Applicable
File nameIa64_e779114ef781741ae3dac5dd10dc1e93_31bf3856ad364e35_6.0.6001.22690_none_1ce98fcbd7a51594.manifest
File versionNot Applicable
File size699
Date (UTC)13-May-2010
Time (UTC)06:11
PlatformNot Applicable
File nameIa64_microsoft-windows-os-kernel_31bf3856ad364e35_6.0.6001.22690_none_6c5a5c93cd87a86a.manifest
File versionNot Applicable
File size16,819
Date (UTC)12-May-2010
Time (UTC)17:00
PlatformNot Applicable
File nameIa64_microsoft-windows-os-kernel_31bf3856ad364e35_6.0.6002.22403_none_6ea5208bca624b41.manifest
File versionNot Applicable
File size16,819
Date (UTC)12-May-2010
Time (UTC)18:11
PlatformNot Applicable
File nameIa64_microsoft-windows-rdbss_31bf3856ad364e35_6.0.6001.22690_none_59fed2bf7ace0596.manifest
File versionNot Applicable
File size7,107
Date (UTC)12-May-2010
Time (UTC)17:00
PlatformNot Applicable
File nameIa64_microsoft-windows-rdbss_31bf3856ad364e35_6.0.6002.22403_none_5c4996b777a8a86d.manifest
File versionNot Applicable
File size7,107
Date (UTC)12-May-2010
Time (UTC)18:11
PlatformNot Applicable
File nameIa64_microsoft-windows-smb10-minirdr_31bf3856ad364e35_6.0.6001.22690_none_88ce867c64d34387.manifest
File versionNot Applicable
File size7,420
Date (UTC)12-May-2010
Time (UTC)17:00
PlatformNot Applicable
File nameIa64_microsoft-windows-smb10-minirdr_31bf3856ad364e35_6.0.6002.22403_none_8b194a7461ade65e.manifest
File versionNot Applicable
File size7,420
Date (UTC)12-May-2010
Time (UTC)18:12
PlatformNot Applicable
File nameUpdate.mum
File versionNot Applicable
File size2,748
Date (UTC)13-May-2010
Time (UTC)06:11
PlatformNot Applicable

Properties

Article ID: 981964 - Last Review: June 13, 2010 - Revision: 2.0
APPLIES TO
  • Windows Vista Business
  • Windows Vista Enterprise
  • Windows Vista Home Basic
  • Windows Vista Home Premium
  • Windows Vista Ultimate
  • Windows Vista Business 64-bit Edition
  • Windows Vista Enterprise 64-bit Edition
  • Windows Vista Home Basic 64-bit Edition
  • Windows Vista Home Premium 64-bit Edition
  • Windows Vista Ultimate 64-bit Edition
  • Windows Server 2008 Standard
  • Windows Server 2008 Enterprise
  • Windows Server 2008 Datacenter
  • Windows Server 2008 Standard without Hyper-V
  • Windows Server 2008 Enterprise without Hyper-V
  • Windows Server 2008 Datacenter without Hyper-V
  • Windows Server 2008 for Itanium-Based Systems
Keywords: 
kbprb kbsurveynew kbexpertiseadvanced kbHotfixServer kbautohotfix kbqfe kbfix KB981964

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