FIX: TCP connections that use ephemeral loopback addresses are dropped suddenly in Windows

Symptoms
You run an application that connects remotely by using a TCP connection on a computer that's running Windows 8, Windows 8.1, Windows Server 2012, or Windows Server 2012 R2. If the TCP connection uses ephemeral (short-lived) loopback addresses, the connection may be dropped suddenly after 40 to 50 seconds. However, the TCP connection is still "live" from the client side. In this situation, the application does not maintain the remote connection.
Resolution
To resolve this issue in Windows 8 or Windows Server 2012, install update rollup 2911101, or install the hotfix that is described in this article.

To resolve this issue in Windows 8.1 or Windows Server 2012 R2, install update rollup 2911106, or install the hotfix that is described in this article.

Update information

For more information about how to obtain update rollup 2911101, click the following article number to view the article in the Microsoft Knowledge Base:
2911101 Windows RT, Windows 8, and Windows Server 2012 update rollup: January 2014
For more information about how to obtain update rollup 2911106, click the following article number to view the article in the Microsoft Knowledge Base:
2911106 Windows RT 8.1, Windows 8.1, and Windows Server 2012 R2 update rollup: January 2014

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, go to the following Microsoft website: 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, you must be running one of the following:
  • Windows 8
  • Windows Server 2012
  • Windows 8.1
  • Windows Server 2012 R2

Restart requirement

You do not have to restart the computer after you apply this hotfix.

Hotfix replacement information

This hotfix does not replace any 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 8 and Windows Server 2012 file information and notes

Important Windows 8 and Windows Server 2012 hotfixes are included in the same packages. However, only "Windows 8" 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 8" 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.
    VersionProductMilestoneService branch
    6.2.920 0.16 xxxWindows 8 and Windows Server 2012RTMGDR
    6.2.920 0.20 xxxWindows 8 and Windows Server 2012RTMLDR
  • 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 8 and Windows Server 2012" section. MUM and 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 8
File nameFile versionFile sizeDateTimePlatform
Fwpkclnt.sys6.2.9200.16548271,08002-Mar-201309:21x86
Tcpip.sys6.2.9200.167341,799,51210-Oct-201310:21x86
Fwpkclnt.sys6.2.9200.16384271,08826-Jul-201203:30x86
Tcpip.sys6.2.9200.208461,816,40809-Oct-201323:33x86
For all supported x64-based versions of Windows 8 and Windows Server 2012
File nameFile versionFile sizeDateTimePlatform
Fwpkclnt.sys6.2.9200.16547411,88002-Mar-201309:59x64
Tcpip.sys6.2.9200.167342,232,66410-Oct-201311:25x64
Fwpkclnt.sys6.2.9200.16384411,88826-Jul-201204:43x64
Tcpip.sys6.2.9200.208462,228,05610-Oct-201301:04x64
For all supported ARM-based versions of Windows 8
File nameFile versionFile sizeDateTimePlatform
Fwpkclnt.sys6.2.9200.16420273,64020-Sep-201208:03Not Applicable
Tcpip.sys6.2.9200.167341,691,99210-Oct-201311:27Not Applicable

Windows 8.1 and Windows Server 2012 R2 file information and notes

Important Windows 8.1 and Windows Server 2012 R2 hotfixes are included in the same packages. However, only "Windows Blue RTM" 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 Blue RTM" 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.
    VersionProductMilestoneService branch
    6.3.960 0.16 xxxWindows 8.1 and Windows Server 2012 R2RTMGDR
  • 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 8.1 and Windows Server 2012 R2" section. MUM and 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 8.1
File nameFile versionFile sizeDateTimePlatform
Fwpkclnt.sys6.3.9600.16384286,04822-Aug-201305:20x86
Tcpip.sys6.3.9600.164561,888,08805-Nov-201318:50x86
For all supported x64-based versions of Windows 8.1 and of Windows Server 2012 R2
File nameFile versionFile sizeDateTimePlatform
Fwpkclnt.sys6.3.9600.16384428,89622-Aug-201312:34x64
Tcpip.sys6.3.9600.164562,551,12805-Nov-201320:12x64
For all supported ARM-based versions of Windows 8.1
File nameFile versionFile sizeDateTimePlatform
Fwpkclnt.sys6.3.9600.16384278,88822-Aug-201303:52Not Applicable
Tcpip.sys6.3.9600.164561,754,97605-Nov-201316:25Not Applicable
Status
Microsoft has confirmed that this is a problem in the Microsoft products that are listed in the "Applies to" section.
Additional file information

Additional file information for Windows 8 and Windows Server 2012

Additional files for all supported x86-based versions of Windows 8
File nameX86_e448ea814776f3404ce51934aabe60a9_31bf3856ad364e35_6.2.9200.16734_none_15653c2eccf1da35.manifest
File versionNot Applicable
File size702
Date (UTC)10-Oct-2013
Time (UTC)17:17
PlatformNot Applicable
File nameX86_e90498fb9abfd7b7d193b5d1c69f7bb3_31bf3856ad364e35_6.2.9200.20846_none_edbf5db20a9fe5e8.manifest
File versionNot Applicable
File size702
Date (UTC)10-Oct-2013
Time (UTC)17:17
PlatformNot Applicable
File nameX86_microsoft-windows-tcpip-binaries_31bf3856ad364e35_6.2.9200.16734_none_afff356737a46e9e.manifest
File versionNot Applicable
File size3,883
Date (UTC)10-Oct-2013
Time (UTC)17:18
PlatformNot Applicable
File nameX86_microsoft-windows-tcpip-binaries_31bf3856ad364e35_6.2.9200.20846_none_b08002da50c85d07.manifest
File versionNot Applicable
File size3,883
Date (UTC)10-Oct-2013
Time (UTC)17:18
PlatformNot Applicable
Additional files for all supported x64-based versions of Windows 8 and Windows Server 2012
File nameAmd64_25a5711604295935d7607b55dbb139c9_31bf3856ad364e35_6.2.9200.16734_none_059527b1761544f1.manifest
File versionNot Applicable
File size706
Date (UTC)10-Oct-2013
Time (UTC)17:18
PlatformNot Applicable
File nameAmd64_fb0253d175d78c4255b28eb56de8dd65_31bf3856ad364e35_6.2.9200.20846_none_dc7256215a60a065.manifest
File versionNot Applicable
File size706
Date (UTC)10-Oct-2013
Time (UTC)17:18
PlatformNot Applicable
File nameAmd64_microsoft-windows-tcpip-binaries_31bf3856ad364e35_6.2.9200.16734_none_0c1dd0eaf001dfd4.manifest
File versionNot Applicable
File size3,887
Date (UTC)10-Oct-2013
Time (UTC)17:18
PlatformNot Applicable
File nameAmd64_microsoft-windows-tcpip-binaries_31bf3856ad364e35_6.2.9200.20846_none_0c9e9e5e0925ce3d.manifest
File versionNot Applicable
File size3,887
Date (UTC)10-Oct-2013
Time (UTC)17:18
PlatformNot Applicable
Additional files for all supported ARM-based versions of Windows 8
File nameArm_1660090cbb016c30ca8da2b0fe6e14f9_31bf3856ad364e35_6.2.9200.16734_none_0bd697d88928d3f4.manifest
File versionNot Applicable
File size702
Date (UTC)10-Oct-2013
Time (UTC)17:17
PlatformNot Applicable
File nameArm_microsoft-windows-tcpip-binaries_31bf3856ad364e35_6.2.9200.16734_none_b001a7bf37a18d64.manifest
File versionNot Applicable
File size3,883
Date (UTC)10-Oct-2013
Time (UTC)17:17
PlatformNot Applicable

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 namePackage_1_for_kb2897602~31bf3856ad364e35~x86~~6.3.1.0.mum
File versionNot Applicable
File size1,837
Date (UTC)06-Nov-2013
Time (UTC)09:42
PlatformNot Applicable
File namePackage_2_for_kb2897602~31bf3856ad364e35~x86~~6.3.1.0.mum
File versionNot Applicable
File size2,057
Date (UTC)06-Nov-2013
Time (UTC)09:42
PlatformNot Applicable
File namePackage_3_for_kb2897602~31bf3856ad364e35~x86~~6.3.1.0.mum
File versionNot Applicable
File size1,837
Date (UTC)06-Nov-2013
Time (UTC)09:42
PlatformNot Applicable
File namePackage_for_kb2897602_rtm~31bf3856ad364e35~x86~~6.3.1.0.mum
File versionNot Applicable
File size2,243
Date (UTC)06-Nov-2013
Time (UTC)09:42
PlatformNot Applicable
File nameX86_4ce6ff50b2ea8cbf4b59deacb5d753ce_31bf3856ad364e35_6.3.9600.16456_none_0e2525823271782c.manifest
File versionNot Applicable
File size702
Date (UTC)06-Nov-2013
Time (UTC)09:42
PlatformNot Applicable
File nameX86_microsoft-windows-tcpip-binaries_31bf3856ad364e35_6.3.9600.16456_none_47e0491781e5b236.manifest
File versionNot Applicable
File size3,883
Date (UTC)06-Nov-2013
Time (UTC)09:42
PlatformNot Applicable
Additional files for all supported x64-based versions of Windows 8.1 and of Windows Server 2012 R2
File nameAmd64_204d9aea87ed3aa2827e5f0be2213545_31bf3856ad364e35_6.3.9600.16456_none_e4a41ff31e8374a2.manifest
File versionNot Applicable
File size706
Date (UTC)06-Nov-2013
Time (UTC)09:42
PlatformNot Applicable
File nameAmd64_microsoft-windows-tcpip-binaries_31bf3856ad364e35_6.3.9600.16456_none_a3fee49b3a43236c.manifest
File versionNot Applicable
File size3,887
Date (UTC)06-Nov-2013
Time (UTC)09:42
PlatformNot Applicable
File namePackage_1_for_kb2897602~31bf3856ad364e35~amd64~~6.3.1.0.mum
File versionNot Applicable
File size1,847
Date (UTC)06-Nov-2013
Time (UTC)09:42
PlatformNot Applicable
File namePackage_2_for_kb2897602~31bf3856ad364e35~amd64~~6.3.1.0.mum
File versionNot Applicable
File size2,291
Date (UTC)06-Nov-2013
Time (UTC)09:42
PlatformNot Applicable
File namePackage_3_for_kb2897602~31bf3856ad364e35~amd64~~6.3.1.0.mum
File versionNot Applicable
File size1,847
Date (UTC)06-Nov-2013
Time (UTC)09:42
PlatformNot Applicable
File namePackage_for_kb2897602_rtm~31bf3856ad364e35~amd64~~6.3.1.0.mum
File versionNot Applicable
File size2,479
Date (UTC)06-Nov-2013
Time (UTC)09:42
PlatformNot Applicable
Additional files for all supported ARM-based versions of Windows 8.1
File nameArm_aab79a2ac44f5a0342f8c46bdf767b2b_31bf3856ad364e35_6.3.9600.16456_none_d18b1fd2b88dd6ee.manifest
File versionNot Applicable
File size702
Date (UTC)06-Nov-2013
Time (UTC)09:42
PlatformNot Applicable
File nameArm_microsoft-windows-tcpip-binaries_31bf3856ad364e35_6.3.9600.16456_none_47e2bb6f81e2d0fc.manifest
File versionNot Applicable
File size3,883
Date (UTC)06-Nov-2013
Time (UTC)09:42
PlatformNot Applicable
File namePackage_1_for_kb2897602~31bf3856ad364e35~arm~~6.3.1.0.mum
File versionNot Applicable
File size1,837
Date (UTC)06-Nov-2013
Time (UTC)09:42
PlatformNot Applicable
File namePackage_2_for_kb2897602~31bf3856ad364e35~arm~~6.3.1.0.mum
File versionNot Applicable
File size2,057
Date (UTC)06-Nov-2013
Time (UTC)09:42
PlatformNot Applicable
File namePackage_3_for_kb2897602~31bf3856ad364e35~arm~~6.3.1.0.mum
File versionNot Applicable
File size1,837
Date (UTC)06-Nov-2013
Time (UTC)09:42
PlatformNot Applicable
File namePackage_for_kb2897602_rtm~31bf3856ad364e35~arm~~6.3.1.0.mum
File versionNot Applicable
File size2,243
Date (UTC)06-Nov-2013
Time (UTC)09:42
PlatformNot Applicable
References
See the terminology Microsoft uses to describe software updates for more information.
Properties

Article ID: 2897602 - Last Review: 01/14/2014 17:40:00 - Revision: 2.0

Windows 8.1, Windows 8.1 Enterprise, Windows 8.1 Pro, Windows Server 2012 R2 Datacenter, Windows Server 2012 R2 Essentials, Windows Server 2012 R2 Standard, Windows 8, Windows 8 Enterprise, Windows 8 Pro, Windows Server 2012 Datacenter, Windows Server 2012 Essentials, Windows Server 2012 Standard

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