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

Applies To
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 Datacenter Windows Server 2012 Essentials Windows Server 2012 Standard Windows Server 2012 Standard

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 2014For 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:

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, 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.

    Version Product Milestone Service branch
    6.2.920 0.16 xxx Windows 8 and Windows Server 2012 RTM GDR
    6.2.920 0.20 xxx Windows 8 and Windows Server 2012 RTM LDR
  • 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 name File version File size Date Time Platform
Fwpkclnt.sys 6.2.9200.16548 271,080 02-Mar-2013 09:21 x86
Tcpip.sys 6.2.9200.16734 1,799,512 10-Oct-2013 10:21 x86
Fwpkclnt.sys 6.2.9200.16384 271,088 26-Jul-2012 03:30 x86
Tcpip.sys 6.2.9200.20846 1,816,408 09-Oct-2013 23:33 x86

For all supported x64-based versions of Windows 8 and Windows Server 2012

File name File version File size Date Time Platform
Fwpkclnt.sys 6.2.9200.16547 411,880 02-Mar-2013 09:59 x64
Tcpip.sys 6.2.9200.16734 2,232,664 10-Oct-2013 11:25 x64
Fwpkclnt.sys 6.2.9200.16384 411,888 26-Jul-2012 04:43 x64
Tcpip.sys 6.2.9200.20846 2,228,056 10-Oct-2013 01:04 x64

For all supported ARM-based versions of Windows 8

File name File version File size Date Time Platform
Fwpkclnt.sys 6.2.9200.16420 273,640 20-Sep-2012 08:03 Not Applicable
Tcpip.sys 6.2.9200.16734 1,691,992 10-Oct-2013 11:27 Not 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.

    Version Product Milestone Service branch
    6.3.960 0.16 xxx Windows 8.1 and Windows Server 2012 R2 RTM GDR
  • 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 name File version File size Date Time Platform
Fwpkclnt.sys 6.3.9600.16384 286,048 22-Aug-2013 05:20 x86
Tcpip.sys 6.3.9600.16456 1,888,088 05-Nov-2013 18:50 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
Fwpkclnt.sys 6.3.9600.16384 428,896 22-Aug-2013 12:34 x64
Tcpip.sys 6.3.9600.16456 2,551,128 05-Nov-2013 20:12 x64

For all supported ARM-based versions of Windows 8.1

File name File version File size Date Time Platform
Fwpkclnt.sys 6.3.9600.16384 278,888 22-Aug-2013 03:52 Not Applicable
Tcpip.sys 6.3.9600.16456 1,754,976 05-Nov-2013 16:25 Not 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 name X86_e448ea814776f3404ce51934aabe60a9_31bf3856ad364e35_6.2.9200.16734_none_15653c2eccf1da35.manifest
File version Not Applicable
File size 702
Date (UTC) 10-Oct-2013
Time (UTC) 17:17
Platform Not Applicable
File name X86_e90498fb9abfd7b7d193b5d1c69f7bb3_31bf3856ad364e35_6.2.9200.20846_none_edbf5db20a9fe5e8.manifest
File version Not Applicable
File size 702
Date (UTC) 10-Oct-2013
Time (UTC) 17:17
Platform Not Applicable
File name X86_microsoft-windows-tcpip-binaries_31bf3856ad364e35_6.2.9200.16734_none_afff356737a46e9e.manifest
File version Not Applicable
File size 3,883
Date (UTC) 10-Oct-2013
Time (UTC) 17:18
Platform Not Applicable
File name X86_microsoft-windows-tcpip-binaries_31bf3856ad364e35_6.2.9200.20846_none_b08002da50c85d07.manifest
File version Not Applicable
File size 3,883
Date (UTC) 10-Oct-2013
Time (UTC) 17:18
Platform Not Applicable

Additional files for all supported x64-based versions of Windows 8 and Windows Server 2012

File name Amd64_25a5711604295935d7607b55dbb139c9_31bf3856ad364e35_6.2.9200.16734_none_059527b1761544f1.manifest
File version Not Applicable
File size 706
Date (UTC) 10-Oct-2013
Time (UTC) 17:18
Platform Not Applicable
File name Amd64_fb0253d175d78c4255b28eb56de8dd65_31bf3856ad364e35_6.2.9200.20846_none_dc7256215a60a065.manifest
File version Not Applicable
File size 706
Date (UTC) 10-Oct-2013
Time (UTC) 17:18
Platform Not Applicable
File name Amd64_microsoft-windows-tcpip-binaries_31bf3856ad364e35_6.2.9200.16734_none_0c1dd0eaf001dfd4.manifest
File version Not Applicable
File size 3,887
Date (UTC) 10-Oct-2013
Time (UTC) 17:18
Platform Not Applicable
File name Amd64_microsoft-windows-tcpip-binaries_31bf3856ad364e35_6.2.9200.20846_none_0c9e9e5e0925ce3d.manifest
File version Not Applicable
File size 3,887
Date (UTC) 10-Oct-2013
Time (UTC) 17:18
Platform Not Applicable

Additional files for all supported ARM-based versions of Windows 8

File name Arm_1660090cbb016c30ca8da2b0fe6e14f9_31bf3856ad364e35_6.2.9200.16734_none_0bd697d88928d3f4.manifest
File version Not Applicable
File size 702
Date (UTC) 10-Oct-2013
Time (UTC) 17:17
Platform Not Applicable
File name Arm_microsoft-windows-tcpip-binaries_31bf3856ad364e35_6.2.9200.16734_none_b001a7bf37a18d64.manifest
File version Not Applicable
File size 3,883
Date (UTC) 10-Oct-2013
Time (UTC) 17:17
Platform Not 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 name Package_1_for_kb2897602~31bf3856ad364e35~x86~~6.3.1.0.mum
File version Not Applicable
File size 1,837
Date (UTC) 06-Nov-2013
Time (UTC) 09:42
Platform Not Applicable
File name Package_2_for_kb2897602~31bf3856ad364e35~x86~~6.3.1.0.mum
File version Not Applicable
File size 2,057
Date (UTC) 06-Nov-2013
Time (UTC) 09:42
Platform Not Applicable
File name Package_3_for_kb2897602~31bf3856ad364e35~x86~~6.3.1.0.mum
File version Not Applicable
File size 1,837
Date (UTC) 06-Nov-2013
Time (UTC) 09:42
Platform Not Applicable
File name Package_for_kb2897602_rtm~31bf3856ad364e35~x86~~6.3.1.0.mum
File version Not Applicable
File size 2,243
Date (UTC) 06-Nov-2013
Time (UTC) 09:42
Platform Not Applicable
File name X86_4ce6ff50b2ea8cbf4b59deacb5d753ce_31bf3856ad364e35_6.3.9600.16456_none_0e2525823271782c.manifest
File version Not Applicable
File size 702
Date (UTC) 06-Nov-2013
Time (UTC) 09:42
Platform Not Applicable
File name X86_microsoft-windows-tcpip-binaries_31bf3856ad364e35_6.3.9600.16456_none_47e0491781e5b236.manifest
File version Not Applicable
File size 3,883
Date (UTC) 06-Nov-2013
Time (UTC) 09:42
Platform Not Applicable

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

File name Amd64_204d9aea87ed3aa2827e5f0be2213545_31bf3856ad364e35_6.3.9600.16456_none_e4a41ff31e8374a2.manifest
File version Not Applicable
File size 706
Date (UTC) 06-Nov-2013
Time (UTC) 09:42
Platform Not Applicable
File name Amd64_microsoft-windows-tcpip-binaries_31bf3856ad364e35_6.3.9600.16456_none_a3fee49b3a43236c.manifest
File version Not Applicable
File size 3,887
Date (UTC) 06-Nov-2013
Time (UTC) 09:42
Platform Not Applicable
File name Package_1_for_kb2897602~31bf3856ad364e35~amd64~~6.3.1.0.mum
File version Not Applicable
File size 1,847
Date (UTC) 06-Nov-2013
Time (UTC) 09:42
Platform Not Applicable
File name Package_2_for_kb2897602~31bf3856ad364e35~amd64~~6.3.1.0.mum
File version Not Applicable
File size 2,291
Date (UTC) 06-Nov-2013
Time (UTC) 09:42
Platform Not Applicable
File name Package_3_for_kb2897602~31bf3856ad364e35~amd64~~6.3.1.0.mum
File version Not Applicable
File size 1,847
Date (UTC) 06-Nov-2013
Time (UTC) 09:42
Platform Not Applicable
File name Package_for_kb2897602_rtm~31bf3856ad364e35~amd64~~6.3.1.0.mum
File version Not Applicable
File size 2,479
Date (UTC) 06-Nov-2013
Time (UTC) 09:42
Platform Not Applicable

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

File name Arm_aab79a2ac44f5a0342f8c46bdf767b2b_31bf3856ad364e35_6.3.9600.16456_none_d18b1fd2b88dd6ee.manifest
File version Not Applicable
File size 702
Date (UTC) 06-Nov-2013
Time (UTC) 09:42
Platform Not Applicable
File name Arm_microsoft-windows-tcpip-binaries_31bf3856ad364e35_6.3.9600.16456_none_47e2bb6f81e2d0fc.manifest
File version Not Applicable
File size 3,883
Date (UTC) 06-Nov-2013
Time (UTC) 09:42
Platform Not Applicable
File name Package_1_for_kb2897602~31bf3856ad364e35~arm~~6.3.1.0.mum
File version Not Applicable
File size 1,837
Date (UTC) 06-Nov-2013
Time (UTC) 09:42
Platform Not Applicable
File name Package_2_for_kb2897602~31bf3856ad364e35~arm~~6.3.1.0.mum
File version Not Applicable
File size 2,057
Date (UTC) 06-Nov-2013
Time (UTC) 09:42
Platform Not Applicable
File name Package_3_for_kb2897602~31bf3856ad364e35~arm~~6.3.1.0.mum
File version Not Applicable
File size 1,837
Date (UTC) 06-Nov-2013
Time (UTC) 09:42
Platform Not Applicable
File name Package_for_kb2897602_rtm~31bf3856ad364e35~arm~~6.3.1.0.mum
File version Not Applicable
File size 2,243
Date (UTC) 06-Nov-2013
Time (UTC) 09:42
Platform Not Applicable

      

References

See the terminology Microsoft uses to describe software updates for more information.