Symptoms

Consider the following scenario:

  • You run a Microsoft Outlook client in one of the following operating systems:

    • Windows Vista

    • Windows 7

    • Windows Server 2008

    • Windows Server 2008 R2

  • You configure the Outlook client to connect to a Microsoft Exchange mailbox on the node of a load-balancing server.

In this scenario, the connection to the Exchange mailbox from the Outlook client fails.

Cause

This issue occurs because of multiple problems in the RPC over HTTP Load Balancing Service (LBS) functionality.

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 website:

http://support.microsoft.com/contactus/?ws=supportNote 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, you 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)

  • Windows 7

  • Windows Server 2008 R2

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 have to restart the computer after you apply this hotfix.

Hotfix replacement information

This hotfix does not replace a previously released hotfix.

File information

The global 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.

    Version

    Product

    SR_Level

    Service branch

    6.0.600
    1.
    22xxx

    Windows Vista and Windows Server 2008

    SP1

    LDR

    6.0.600
    2.
    22xxx

    Windows Vista and Windows Server 2008

    SP2

    LDR

  • Service Pack 1 is integrated into the release version of Windows Server 2008.

  • The MANIFEST files (.manifest) that are installed for each environment are listed separately in the "Additional file information for Windows Server 2008 and for Windows Vista" section. MANIFEST files and the associated security catalog (.cat) files, are extremely important to maintain the state of the updated components. 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

File name

File version

File size

Date

Time

Platform

Rpchttp.dll

6.0.6001.22762

128,000

13-Sep-2010

16:04

x86

Rpchttp.dll

6.0.6002.22486

128,000

13-Sep-2010

17:40

x86

Lbservice.dll

6.0.6001.22762

20,992

13-Sep-2010

16:02

x86

Rpcproxy.dll

6.0.6001.22762

48,640

13-Sep-2010

16:04

x86

Rpcproxymigrationplugin.dll

6.0.6001.22762

38,400

13-Sep-2010

16:04

x86

Lbservice.dll

6.0.6002.22486

20,992

13-Sep-2010

17:38

x86

Rpcproxy.dll

6.0.6002.22486

48,640

13-Sep-2010

17:40

x86

Rpcproxymigrationplugin.dll

6.0.6002.22486

38,400

13-Sep-2010

17:40

x86

For all supported x64-based versions of Windows Server 2008 and of Windows Vista

File name

File version

File size

Date

Time

Platform

Rpchttp.dll

6.0.6001.22762

164,864

13-Sep-2010

14:58

x64

Rpchttp.dll

6.0.6002.22486

164,864

13-Sep-2010

17:15

x64

Lbservice.dll

6.0.6001.22762

24,064

13-Sep-2010

14:56

x64

Rpcproxy.dll

6.0.6001.22762

57,856

13-Sep-2010

14:58

x64

Rpcproxymigrationplugin.dll

6.0.6001.22762

44,032

13-Sep-2010

14:58

x64

Lbservice.dll

6.0.6002.22486

24,064

13-Sep-2010

17:13

x64

Rpcproxy.dll

6.0.6002.22486

58,368

13-Sep-2010

17:15

x64

Rpcproxymigrationplugin.dll

6.0.6002.22486

44,032

13-Sep-2010

17:15

x64

For all supported IA-64-based versions of Windows Server 2008

File name

File version

File size

Date

Time

Platform

Rpchttp.dll

6.0.6001.22762

372,224

13-Sep-2010

15:58

IA-64

Rpchttp.dll

6.0.6002.22486

372,224

13-Sep-2010

17:14

IA-64

Lbservice.dll

6.0.6001.22762

41,472

13-Sep-2010

15:55

IA-64

Rpcproxy.dll

6.0.6001.22762

116,224

13-Sep-2010

15:58

IA-64

Rpcproxymigrationplugin.dll

6.0.6001.22762

102,912

13-Sep-2010

15:58

IA-64

Lbservice.dll

6.0.6002.22486

41,472

13-Sep-2010

17:12

IA-64

Rpcproxy.dll

6.0.6002.22486

116,736

13-Sep-2010

17:14

IA-64

Rpcproxymigrationplugin.dll

6.0.6002.22486

102,912

13-Sep-2010

17:14

IA-64

Windows 7 and Windows Server 2008 R2 file information notes


Important Windows 7 hotfixes and Windows Server 2008 R2 hotfixes are included in the same packages. However, hotfixes on the Hotfix Request page are listed under both operating systems. To request the hotfix package that applies to one or both operating systems, select the hotfix that is listed under "Windows 7/Windows Server 2008 R2" 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, milestone (RTM, SPn), and service branch (LDR, GDR) can be identified by examining the file version numbers as shown in the following table:

    Version

    Product

    Milestone

    Service branch

    6.1.760
    0.20xxx

    Windows 7 and Windows Server 2008 R2

    RTM

    LDR

  • The MANIFEST files (.manifest) that are installed for each environment are listed separately in the "Additional file information for Windows Server 2008 R2 and for Windows 7" section. MANIFEST files and the associated security catalog (.cat) files, are extremely important to maintain the state of the updated components. 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 7

File name

File version

File size

Date

Time

Platform

Rpchttp.dll

6.1.7600.20835

139,264

11-Nov-2010

05:33

x86

For all supported x64-based versions of Windows 7 and of Windows Server 2008 R2

File name

File version

File size

Date

Time

Platform

Rpchttp.dll

6.1.7600.20835

187,904

11-Nov-2010

06:29

x64

Lbservice.dll

6.1.7600.20835

24,576

11-Nov-2010

06:26

x64

Rpcproxy.dll

6.1.7600.20835

58,368

11-Nov-2010

06:29

x64

Rpchttp.dll

6.1.7600.20835

139,264

11-Nov-2010

05:33

x86

For all supported IA-64-based versions of Windows Server 2008 R2

File name

File version

File size

Date

Time

Platform

Rpchttp.dll

6.1.7600.20835

397,312

11-Nov-2010

05:12

IA-64

Lbservice.dll

6.1.7600.20835

45,568

11-Nov-2010

05:11

IA-64

Rpcproxy.dll

6.1.7600.20835

120,320

11-Nov-2010

05:12

IA-64

Rpchttp.dll

6.1.7600.20835

139,264

11-Nov-2010

05:33

x86

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

File name

X86_1c0149eae401978ed87f88a1527f5eae_31bf3856ad364e35_6.0.6002.22486_none_8de9a28c9b58cd53.manifest

File version

Not applicable

File size

702

Date (UTC)

14-Sep-2010

Time (UTC)

07:41

Platform

Not applicable

File name

X86_51ba4b7186c5a6e5dcbc767d0cf954fc_31bf3856ad364e35_6.0.6002.22486_none_21bf0f788704dd39.manifest

File version

Not applicable

File size

696

Date (UTC)

14-Sep-2010

Time (UTC)

07:41

Platform

Not applicable

File name

X86_6af78c16a73f31efb9f6063d8cae400f_31bf3856ad364e35_6.0.6001.22762_none_aceb0c0ffa4448a8.manifest

File version

Not applicable

File size

702

Date (UTC)

14-Sep-2010

Time (UTC)

07:41

Platform

Not applicable

File name

X86_9ae0cb1cd390fa827a74182a2e4e4c90_31bf3856ad364e35_6.0.6001.22762_none_0bb910799aaeede9.manifest

File version

Not applicable

File size

696

Date (UTC)

14-Sep-2010

Time (UTC)

07:41

Platform

Not applicable

File name

X86_microsoft-windows-rpc-http_31bf3856ad364e35_6.0.6001.22762_none_a043b62b58a052b6.manifest

File version

Not applicable

File size

7,646

Date (UTC)

13-Sep-2010

Time (UTC)

16:21

Platform

Not applicable

File name

X86_microsoft-windows-rpc-http_31bf3856ad364e35_6.0.6002.22486_none_a218896355d34518.manifest

File version

Not applicable

File size

7,646

Date (UTC)

13-Sep-2010

Time (UTC)

18:02

Platform

Not applicable

File name

X86_microsoft-windows-rpc-http_proxy_31bf3856ad364e35_6.0.6001.22762_none_6c0885d734f1408d.manifest

File version

Not applicable

File size

33,944

Date (UTC)

13-Sep-2010

Time (UTC)

16:20

Platform

Not applicable

File name

X86_microsoft-windows-rpc-http_proxy_31bf3856ad364e35_6.0.6002.22486_none_6ddd590f322432ef.manifest

File version

Not applicable

File size

33,944

Date (UTC)

13-Sep-2010

Time (UTC)

18:01

Platform

Not applicable

Additional files for all supported x64-based versions of Windows Vista and of Windows Server 2008

File name

Amd64_77737ad01fa7dde77283e2b0ca645827_31bf3856ad364e35_6.0.6002.22486_none_c4fcebcfa79ac33d.manifest

File version

Not applicable

File size

1,040

Date (UTC)

14-Sep-2010

Time (UTC)

07:41

Platform

Not applicable

File name

Amd64_89b5a8a3a5f51c3caa9d012a90d8b740_31bf3856ad364e35_6.0.6002.22486_none_c25037b5b44b5b5a.manifest

File version

Not applicable

File size

706

Date (UTC)

14-Sep-2010

Time (UTC)

07:41

Platform

Not applicable

File name

Amd64_c6926936a117704e3eaa89147fbe39eb_31bf3856ad364e35_6.0.6001.22762_none_4741fc742b114aaa.manifest

File version

Not applicable

File size

706

Date (UTC)

14-Sep-2010

Time (UTC)

07:41

Platform

Not applicable

File name

Amd64_e4dde7d885a09feccd0cd5914a8a4791_31bf3856ad364e35_6.0.6001.22762_none_5c389967cc088d79.manifest

File version

Not applicable

File size

1,040

Date (UTC)

14-Sep-2010

Time (UTC)

07:41

Platform

Not applicable

File name

Amd64_microsoft-windows-rpc-http_31bf3856ad364e35_6.0.6001.22762_none_fc6251af10fdc3ec.manifest

File version

Not applicable

File size

7,678

Date (UTC)

13-Sep-2010

Time (UTC)

15:13

Platform

Not applicable

File name

Amd64_microsoft-windows-rpc-http_31bf3856ad364e35_6.0.6002.22486_none_fe3724e70e30b64e.manifest

File version

Not applicable

File size

7,678

Date (UTC)

13-Sep-2010

Time (UTC)

17:35

Platform

Not applicable

File name

Amd64_microsoft-windows-rpc-http_proxy_31bf3856ad364e35_6.0.6001.22762_none_c827215aed4eb1c3.manifest

File version

Not applicable

File size

33,985

Date (UTC)

13-Sep-2010

Time (UTC)

15:12

Platform

Not applicable

File name

Amd64_microsoft-windows-rpc-http_proxy_31bf3856ad364e35_6.0.6002.22486_none_c9fbf492ea81a425.manifest

File version

Not applicable

File size

33,985

Date (UTC)

13-Sep-2010

Time (UTC)

17:35

Platform

Not applicable

Additional files for all supported IA-64-based versions of Windows Server 2008

File name

Ia64_60383d7f80cce8ea686858875c5df89e_31bf3856ad364e35_6.0.6001.22762_none_c9e5a46f0e6140f6.manifest

File version

Not applicable

File size

1,038

Date (UTC)

14-Sep-2010

Time (UTC)

07:41

Platform

Not applicable

File name

Ia64_786dd0604c7133f515abffe80862c7c6_31bf3856ad364e35_6.0.6002.22486_none_0f92ab1802597a6f.manifest

File version

Not applicable

File size

1,038

Date (UTC)

14-Sep-2010

Time (UTC)

07:41

Platform

Not applicable

File name

Ia64_dfecd55947c9496ede90495dd9d48ab3_31bf3856ad364e35_6.0.6001.22762_none_c894c627cceb2368.manifest

File version

Not applicable

File size

704

Date (UTC)

14-Sep-2010

Time (UTC)

07:41

Platform

Not applicable

File name

Ia64_ff32313781ffb1dd2880f1f161ff3253_31bf3856ad364e35_6.0.6002.22486_none_87c2ea41e98dc7ac.manifest

File version

Not applicable

File size

704

Date (UTC)

14-Sep-2010

Time (UTC)

07:41

Platform

Not applicable

File name

Ia64_microsoft-windows-rpc-http_31bf3856ad364e35_6.0.6001.22762_none_a0455a21589e5bb2.manifest

File version

Not applicable

File size

7,660

Date (UTC)

13-Sep-2010

Time (UTC)

16:13

Platform

Not applicable

File name

Ia64_microsoft-windows-rpc-http_31bf3856ad364e35_6.0.6002.22486_none_a21a2d5955d14e14.manifest

File version

Not applicable

File size

7,660

Date (UTC)

13-Sep-2010

Time (UTC)

17:31

Platform

Not applicable

File name

Ia64_microsoft-windows-rpc-http_proxy_31bf3856ad364e35_6.0.6001.22762_none_6c0a29cd34ef4989.manifest

File version

Not applicable

File size

33,964

Date (UTC)

13-Sep-2010

Time (UTC)

16:12

Platform

Not applicable

File name

Ia64_microsoft-windows-rpc-http_proxy_31bf3856ad364e35_6.0.6002.22486_none_6ddefd0532223beb.manifest

File version

Not applicable

File size

33,964

Date (UTC)

13-Sep-2010

Time (UTC)

17:31

Platform

Not applicable

Additional file information for Windows 7 and for Windows Server 2008 R2

Additional files for all supported x86-based versions of Windows 7

File name

X86_microsoft-windows-rpc-http_31bf3856ad364e35_6.1.7600.20835_none_a08ef712b99c87d0.manifest

File version

Not Applicable

File size

8,684

Date (UTC)

11-Nov-2010

Time (UTC)

06:10

Platform

Not Applicable

Additional files for all supported x64-based versions of Windows 7 and of Windows Server 2008 R2

File name

Amd64_microsoft-windows-rpc-http_31bf3856ad364e35_6.1.7600.20835_none_fcad929671f9f906.manifest

File version

Not Applicable

File size

8,688

Date (UTC)

11-Nov-2010

Time (UTC)

07:13

Platform

Not Applicable

File name

Amd64_microsoft-windows-rpc-http_proxy_31bf3856ad364e35_6.1.7600.20835_none_c87262424e4ae6dd.manifest

File version

Not Applicable

File size

25,932

Date (UTC)

11-Nov-2010

Time (UTC)

18:09

Platform

Not Applicable

File name

Update.mum

File version

Not Applicable

File size

14,294

Date (UTC)

11-Nov-2010

Time (UTC)

18:02

Platform

Not Applicable

File name

X86_microsoft-windows-rpc-http_31bf3856ad364e35_6.1.7600.20835_none_a08ef712b99c87d0.manifest

File version

Not Applicable

File size

8,684

Date (UTC)

11-Nov-2010

Time (UTC)

06:10

Platform

Not Applicable

Additional files for all supported IA-64-based versions of Windows Server 2008 R2

File name

Ia64_microsoft-windows-rpc-http_31bf3856ad364e35_6.1.7600.20835_none_a0909b08b99a90cc.manifest

File version

Not Applicable

File size

8,686

Date (UTC)

11-Nov-2010

Time (UTC)

06:51

Platform

Not Applicable

File name

Ia64_microsoft-windows-rpc-http_proxy_31bf3856ad364e35_6.1.7600.20835_none_6c556ab495eb7ea3.manifest

File version

Not Applicable

File size

25,930

Date (UTC)

11-Nov-2010

Time (UTC)

18:02

Platform

Not Applicable

File name

Update.mum

File version

Not Applicable

File size

2,955

Date (UTC)

11-Nov-2010

Time (UTC)

18:02

Platform

Not Applicable

File name

X86_microsoft-windows-rpc-http_31bf3856ad364e35_6.1.7600.20835_none_a08ef712b99c87d0.manifest

File version

Not Applicable

File size

8,684

Date (UTC)

11-Nov-2010

Time (UTC)

06:10

Platform

Not Applicable

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