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This article describes an issue that occurs when you install an update on a computer that has Internet Explorer 11 installed in Windows 8.1, Windows RT 8.1, or Windows Server 2012 R2. A hotfix is available to resolve this issue. The hotfix has a prerequisite.

Symptoms

This issue occurs when you apply one or more of the following updates on the computer.

When this issue occurs, using the WinINet or Windows.Web.Http API to change the client certificate does not work. Instead the old certificate is used.

Cause

This issue occurs because WinINet reuses the previous connection instead of opening a new connection when the client certificate is updated.

Resolution

To resolve this issue, we have released a security update for Internet Explorer. Additionally, we have released a hotfix for Windows 8.1, Windows RT 8.1, and Windows Server 2012 R2.

Important Technical Note This fix is only targeted to resolve the scenario of supporting one client certificate at a time per host. If your code makes multiple HTTP requests in parallel by using multiple client certificates to the same host, then because of an internal limitation, only a single client certificate will be used. This may cause some requests to still fail because of the wrong certificate.  

If you intend to use a unique client certificate per request per host, then your application should make sure that the HTTP requests are serialized and not in parallel for this scenario to work. 

Get the update for Internet Explorer

To resolve this issue, install the most recent cumulative security update for Internet Explorer. To do this, go to Microsoft Update. Additionally, see the technical information about the most recent cumulative security update for Internet Explorer.

Note This update was first included in the December cumulative security update for Internet Explorer (MS14-080).

Get the hotfix for Windows 8.1, Windows RT 8.1, or Windows Server 2012 R2

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 this specific problem.

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, submit a request to 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.

Hotfix detail information

Prerequisites

To apply this hotfix, you must have update 2919355 installed in Windows 8.1 or Windows Server 2012 R2.

Registry information

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

Restart requirement

You may have to restart the computer after you apply this hotfix.

Hotfix replacement information

This hotfix does not replace a previously released hotfix.

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 8.1 and Windows Server 2012 R2 file information and notes

Important Windows 8.1 hotfixes and Windows Server 2012 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 8.1/Windows Server 2012 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

    6.3.960 0.17 xxx

    Windows RT 8.1, Windows 8.1, and Windows Server 2012 R2

    RTM

    GDR

  • GDR service branches contain only those fixes that are widely released to address widespread, critical issues. LDR service branches contain hotfixes in addition to widely released fixes.

  • The MANIFEST files (.manifest) and the MUM files (.mum) that are installed for each environment are listed separately in the "Additional file information" section. MUM, MANIFEST, and the associated security catalog (.cat) files, are very 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 8.1

File name

File version

File size

Date

Time

Platform

Windows.networking.backgroundtransfer.dll

6.3.9600.17415

442,368

29-Oct-2014

00:35

x86

Windows.networking.dll

6.3.9600.17550

470,016

06-Dec-2014

01:22

x86

Windows.web.http.dll

6.3.9600.17550

827,392

06-Dec-2014

01:27

x86

Windows.web.dll

6.3.9600.17550

565,248

06-Dec-2014

01:14

x86

For all supported x64-based versions of Windows 8.1 and of Windows Server 2012 R2

File name

File version

File size

Date

Time

Platform

Windows.networking.backgroundtransfer.dll

6.3.9600.17415

608,256

29-Oct-2014

00:42

x64

Windows.networking.dll

6.3.9600.17550

649,216

06-Dec-2014

01:31

x64

Windows.web.http.dll

6.3.9600.17550

1,247,744

06-Dec-2014

01:39

x64

Windows.web.dll

6.3.9600.17550

783,872

06-Dec-2014

01:21

x64

Windows.networking.backgroundtransfer.dll

6.3.9600.17415

442,368

29-Oct-2014

00:35

x86

Windows.networking.dll

6.3.9600.17550

470,016

06-Dec-2014

01:22

x86

Windows.web.http.dll

6.3.9600.17550

827,392

06-Dec-2014

01:27

x86

Windows.web.dll

6.3.9600.17550

565,248

06-Dec-2014

01:14

x86

For all supported ARM-based versions of Windows 8.1

File name

File version

File size

Date

Time

Platform

Windows.networking.backgroundtransfer.dll

6.3.9600.17550

398,336

06-Dec-2014

00:52

Not applicable

Windows.networking.dll

6.3.9600.17550

455,680

06-Dec-2014

01:02

Not applicable

Windows.web.http.dll

6.3.9600.17550

807,424

06-Dec-2014

01:06

Not applicable

Windows.web.dll

6.3.9600.17550

496,128

06-Dec-2014

00:55

Not applicable

Additional file information

Additional file information for Windows 8.1 and for Windows Server 2012 R2

Additional files for all supported x86-based versions of Windows 8.1

File property

Value

File name

X86_0fc9ba2a924e378cf290629be79e8cda_31bf3856ad364e35_6.3.9600.17550_none_43714495cf1dfab4.manifest

File version

Not applicable

File size

717

Date (UTC)

06-Dec-2014

Time (UTC)

08:08

Platform

Not applicable

File name

X86_1fc6f5302a92624e4bd5c3dc12ca15e4_31bf3856ad364e35_6.3.9600.17550_none_b8fa3ae1a364165e.manifest

File version

Not applicable

File size

694

Date (UTC)

06-Dec-2014

Time (UTC)

08:08

Platform

Not applicable

File name

X86_2e6064875da838c8785ffc0dabc711da_31bf3856ad364e35_6.3.9600.17550_none_0701c9a83117241c.manifest

File version

Not applicable

File size

696

Date (UTC)

06-Dec-2014

Time (UTC)

08:08

Platform

Not applicable

File name

X86_a19e1397dcff1fccfc2ea33d1a554451_31bf3856ad364e35_6.3.9600.17550_none_6cead041ccbda8ba.manifest

File version

Not applicable

File size

698

Date (UTC)

06-Dec-2014

Time (UTC)

08:08

Platform

Not applicable

File name

X86_microsoft-windows-n..-backgroundtransfer_31bf3856ad364e35_6.3.9600.17550_none_a0a145e2f97c6d28.manifest

File version

Not applicable

File size

1,843

Date (UTC)

06-Dec-2014

Time (UTC)

08:12

Platform

Not applicable

File name

X86_microsoft-windows-networking_31bf3856ad364e35_6.3.9600.17550_none_b6bc32aa9606a800.manifest

File version

Not applicable

File size

1,783

Date (UTC)

06-Dec-2014

Time (UTC)

03:48

Platform

Not applicable

File name

X86_microsoft-windows-web-http_31bf3856ad364e35_6.3.9600.17550_none_8f19cf7ecbae89ab.manifest

File version

Not applicable

File size

50,792

Date (UTC)

06-Dec-2014

Time (UTC)

03:48

Platform

Not applicable

File name

X86_microsoft-windows-webapi_31bf3856ad364e35_6.3.9600.17550_none_a1e093ad54173e0c.manifest

File version

Not applicable

File size

66,046

Date (UTC)

06-Dec-2014

Time (UTC)

03:48

Platform

Not applicable

Additional files for all supported x64-based versions of Windows 8.1 and of Windows Server 2012 R2

File property

Value

File name

Amd64_0fc9ba2a924e378cf290629be79e8cda_31bf3856ad364e35_6.3.9600.17550_none_9f8fe019877b6bea.manifest

File version

Not applicable

File size

719

Date (UTC)

06-Dec-2014

Time (UTC)

08:08

Platform

Not applicable

File name

Amd64_1fc6f5302a92624e4bd5c3dc12ca15e4_31bf3856ad364e35_6.3.9600.17550_none_1518d6655bc18794.manifest

File version

Not applicable

File size

696

Date (UTC)

06-Dec-2014

Time (UTC)

08:08

Platform

Not applicable

File name

Amd64_2e6064875da838c8785ffc0dabc711da_31bf3856ad364e35_6.3.9600.17550_none_6320652be9749552.manifest

File version

Not applicable

File size

698

Date (UTC)

06-Dec-2014

Time (UTC)

08:08

Platform

Not applicable

File name

Amd64_57c2e77f962e3aae1ecaa95b8baf0eb3_31bf3856ad364e35_6.3.9600.17550_none_8d77ef8f227aba8b.manifest

File version

Not applicable

File size

721

Date (UTC)

06-Dec-2014

Time (UTC)

08:08

Platform

Not applicable

File name

Amd64_75a95bd6f968c1d49b1316dc04573933_31bf3856ad364e35_6.3.9600.17550_none_39dd4aa410a92bda.manifest

File version

Not applicable

File size

698

Date (UTC)

06-Dec-2014

Time (UTC)

08:08

Platform

Not applicable

File name

Amd64_9024a5ef0187777daadde876c3ecef7c_31bf3856ad364e35_6.3.9600.17550_none_04c6bec6d78748c9.manifest

File version

Not applicable

File size

702

Date (UTC)

06-Dec-2014

Time (UTC)

08:08

Platform

Not applicable

File name

Amd64_a19e1397dcff1fccfc2ea33d1a554451_31bf3856ad364e35_6.3.9600.17550_none_c9096bc5851b19f0.manifest

File version

Not applicable

File size

700

Date (UTC)

06-Dec-2014

Time (UTC)

08:08

Platform

Not applicable

File name

Amd64_ef3121e1b7b38f85cd044cf61b10dab7_31bf3856ad364e35_6.3.9600.17550_none_5fd589038d5f501c.manifest

File version

Not applicable

File size

700

Date (UTC)

06-Dec-2014

Time (UTC)

08:08

Platform

Not applicable

File name

Amd64_microsoft-windows-n..-backgroundtransfer_31bf3856ad364e35_6.3.9600.17550_none_fcbfe166b1d9de5e.manifest

File version

Not applicable

File size

1,845

Date (UTC)

06-Dec-2014

Time (UTC)

08:15

Platform

Not applicable

File name

Amd64_microsoft-windows-networking_31bf3856ad364e35_6.3.9600.17550_none_12dace2e4e641936.manifest

File version

Not applicable

File size

1,785

Date (UTC)

06-Dec-2014

Time (UTC)

04:33

Platform

Not applicable

File name

Amd64_microsoft-windows-web-http_31bf3856ad364e35_6.3.9600.17550_none_eb386b02840bfae1.manifest

File version

Not applicable

File size

50,796

Date (UTC)

06-Dec-2014

Time (UTC)

04:33

Platform

Not applicable

File name

Amd64_microsoft-windows-webapi_31bf3856ad364e35_6.3.9600.17550_none_fdff2f310c74af42.manifest

File version

Not applicable

File size

66,050

Date (UTC)

06-Dec-2014

Time (UTC)

04:33

Platform

Not applicable

File name

X86_microsoft-windows-n..-backgroundtransfer_31bf3856ad364e35_6.3.9600.17550_none_a0a145e2f97c6d28.manifest

File version

Not applicable

File size

1,843

Date (UTC)

06-Dec-2014

Time (UTC)

08:15

Platform

Not applicable

File name

X86_microsoft-windows-networking_31bf3856ad364e35_6.3.9600.17550_none_b6bc32aa9606a800.manifest

File version

Not applicable

File size

1,783

Date (UTC)

06-Dec-2014

Time (UTC)

03:48

Platform

Not applicable

File name

X86_microsoft-windows-web-http_31bf3856ad364e35_6.3.9600.17550_none_8f19cf7ecbae89ab.manifest

File version

Not applicable

File size

50,792

Date (UTC)

06-Dec-2014

Time (UTC)

03:48

Platform

Not applicable

File name

X86_microsoft-windows-webapi_31bf3856ad364e35_6.3.9600.17550_none_a1e093ad54173e0c.manifest

File version

Not applicable

File size

66,046

Date (UTC)

06-Dec-2014

Time (UTC)

03:48

Platform

Not applicable

Additional files for all supported ARM-based versions of Windows 8.1

File property

Value

File name

Arm_579a227c08d3c0099c8408f70987a008_31bf3856ad364e35_6.3.9600.17550_none_903aac798a557392.manifest

File version

Not applicable

File size

696

Date (UTC)

06-Dec-2014

Time (UTC)

08:08

Platform

Not applicable

File name

Arm_7eda4bd8832fd9645d096b0707cb4715_31bf3856ad364e35_6.3.9600.17550_none_145d35f3b9c7a2c6.manifest

File version

Not applicable

File size

698

Date (UTC)

06-Dec-2014

Time (UTC)

08:08

Platform

Not applicable

File name

Arm_8fac33a74e9c5276b0c2447be26f4262_31bf3856ad364e35_6.3.9600.17550_none_24a94ad4b40479a9.manifest

File version

Not applicable

File size

717

Date (UTC)

06-Dec-2014

Time (UTC)

08:08

Platform

Not applicable

File name

Arm_c153d3b123b15b4b201d6df64d932e24_31bf3856ad364e35_6.3.9600.17550_none_0868038a32a3defc.manifest

File version

Not applicable

File size

694

Date (UTC)

06-Dec-2014

Time (UTC)

08:08

Platform

Not applicable

File name

Arm_microsoft-windows-n..-backgroundtransfer_31bf3856ad364e35_6.3.9600.17550_none_a0a3b83af9798bee.manifest

File version

Not applicable

File size

1,840

Date (UTC)

06-Dec-2014

Time (UTC)

02:41

Platform

Not applicable

File name

Arm_microsoft-windows-networking_31bf3856ad364e35_6.3.9600.17550_none_b6bea5029603c6c6.manifest

File version

Not applicable

File size

1,783

Date (UTC)

06-Dec-2014

Time (UTC)

02:41

Platform

Not applicable

File name

Arm_microsoft-windows-web-http_31bf3856ad364e35_6.3.9600.17550_none_8f1c41d6cbaba871.manifest

File version

Not applicable

File size

50,792

Date (UTC)

06-Dec-2014

Time (UTC)

02:41

Platform

Not applicable

File name

Arm_microsoft-windows-webapi_31bf3856ad364e35_6.3.9600.17550_none_a1e3060554145cd2.manifest

File version

Not applicable

File size

66,046

Date (UTC)

06-Dec-2014

Time (UTC)

02:41

Platform

Not applicable

Status

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

References

See the terminology that Microsoft uses to describe software updates.

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