Startup delay occurs after you disable IPv6 in Windows

Applies to: Windows Server 2012 R2 DatacenterWindows Server 2012 R2 StandardWindows Server 2012 R2 Essentials More

Symptoms

You may experience an additional five seconds delay during the startup of Windows 8.1, Windows Server 2012 R2, Windows 7 Service Pack 1 (SP1) or Windows Server 2008 R2 SP1.

Cause

This issue occurs because the code to avoid waiting for IPv6 to register with the network stack is not recognized correctly when IPv6 is manually disabled.

How to obtain this update or hotfix

To resolve this issue, we have released an update for Windows 7 or Windows Server 2008 R2. We also have released a hotfix for Windows 8.1 or Windows Server 2012 R2. Before you install this update or hotfix, check the Prerequisites section in this article.

Method 1: Windows Update

This update is available from Windows Update.

Method 2: Microsoft Download Center

The following files are available for download from the Microsoft Download Center:

Operating system	Update
All supported x86-based versions of Windows 7	Download the package now.
All supported x64-based versions of Windows 7	Download the package now.
All supported x64-based versions of Windows Server 2008 R2	Download the package now.
All supported IA-64-based versions of Windows Server 2008 R2	Download the package now.

For more information about how to download Microsoft support files, click the following article number to view the article in the Microsoft Knowledge Base:

119591 How to obtain Microsoft support files from online services

Microsoft scanned this file for viruses. Microsoft used the most current virus-detection software that was available on the date that the file was posted. The file is stored on security-enhanced servers that help prevent any unauthorized changes to the file.

Method 3: Hotfix package for Windows Server 2012 R2 and Windows 8.1

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=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.

Update or hotfix detail information

Prerequisites

To install this update or hotfix, you must have April 2014 update rollup for Windows RT 8.1, Windows 8.1, and Windows Server 2012 R2 (2919355) installed in Windows 8.1 or Windows Server 2012 R2. Or, install Service Pack 1 for Windows 7 or Windows Server 2008 R2.

Registry information

To apply this update or hotfix, you do not have to make any changes to the registry.

Restart requirement

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

Update or hotfix replacement information

This update or hotfix does not replace a previously released update or hotfix.

More Information

File information

The global version of this update 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 0.17xxx 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 Windows 8.1 and for Windows Server 2012 R2" 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.

Version	Product	Milestone	Service branch
6.3.960 0.17xxx	Windows 8.1 and Windows Server 2012 R2	RTM	GDR

For all supported x86-based versions of Windows 8.1

File name	File version	File size	Date	Time	Platform
Tdx.sys	6.3.9600.17623	86,528	30-Dec-2014	02:24	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
Tdx.sys	6.3.9600.17623	108,544	30-Dec-2014	03:06	x64

Windows 7 and Windows Server 2008 R2 file information and notes

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 1.18xxx Windows 7 or Windows Server 2008 R2 SP1 GDR
6.1.760 1.22 xxx Windows 7 or Windows Server 2008 R2 SP1 LDR
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 Windows 7 and for Windows Server 2008 R2" 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.

Version	Product	Milestone	Service branch
6.1.760 1.18xxx	Windows 7 or Windows Server 2008 R2	SP1	GDR
6.1.760 1.22 xxx	Windows 7 or Windows Server 2008 R2	SP1	LDR

For all supported x86-based versions of Windows 7

File name	File version	File size	Date	Time	Platform
Tdx.sys	6.1.7601.18658	74,752	11-Nov-2014	01:32	x86
Tdx.sys	6.1.7601.22865	74,752	11-Nov-2014	01:40	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
Tdx.sys	6.1.7601.18658	119,296	11-Nov-2014	01:46	x64
Tdx.sys	6.1.7601.22865	118,272	11-Nov-2014	01:56	x64

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

File name	File version	File size	Date	Time	Platform
Tdx.sys	6.1.7601.18658	236,032	11-Nov-2014	01:25	IA-64
Tdx.sys	6.1.7601.22865	236,544	11-Nov-2014	01:24	IA-64

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_d166035b018b408e1b409dbea1495178_31bf3856ad364e35_6.3.9600.17623_none_1dfbbc83df023c2c.manifest
File version	Not applicable
File size	702
Date (UTC)	30-Dec-2014
Time (UTC)	17:20
Platform	Not applicable
File name	X86_microsoft-windows-tdi-over-tcpip_31bf3856ad364e35_6.3.9600.17623_none_7f1d5afaf77f8e0e.manifest
File version	Not applicable
File size	2,963
Date (UTC)	30-Dec-2014
Time (UTC)	03:18
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_5ba7e16a8f3170e4c42a4d6ea02b33da_31bf3856ad364e35_6.3.9600.17623_none_aa0753ebab4d7f7d.manifest
File version	Not applicable
File size	706
Date (UTC)	30-Dec-2014
Time (UTC)	17:20
Platform	Not applicable
File name	Amd64_microsoft-windows-tdi-over-tcpip_31bf3856ad364e35_6.3.9600.17623_none_db3bf67eafdcff44.manifest
File version	Not applicable
File size	2,965
Date (UTC)	30-Dec-2014
Time (UTC)	04:06
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 property	Value
File name	Update.mum
File version	Not applicable
File size	2,138
Date (UTC)	11-Nov-2014
Time (UTC)	12:01
Platform	Not applicable
File name	X86_8f4b93184073e8d09aa1ab7465d5dc7d_31bf3856ad364e35_6.1.7601.22865_none_93435de0b1770ae1.manifest
File version	Not applicable
File size	702
Date (UTC)	11-Nov-2014
Time (UTC)	12:01
Platform	Not applicable
File name	X86_e1df7c9b2cc967a153e942e6f5306a60_31bf3856ad364e35_6.1.7601.18658_none_6c3386ba6d429b5d.manifest
File version	Not applicable
File size	702
Date (UTC)	11-Nov-2014
Time (UTC)	12:01
Platform	Not applicable
File name	X86_microsoft-windows-tdi-over-tcpip_31bf3856ad364e35_6.1.7601.18658_none_ec1ddecd3a74adaa.manifest
File version	Not applicable
File size	2,924
Date (UTC)	11-Nov-2014
Time (UTC)	03:07
Platform	Not applicable
File name	X86_microsoft-windows-tdi-over-tcpip_31bf3856ad364e35_6.1.7601.22865_none_ec99acb4539d1a87.manifest
File version	Not applicable
File size	2,924
Date (UTC)	11-Nov-2014
Time (UTC)	03:46
Platform	Not applicable

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

File property	Value
File name	Amd64_64f1268ac63816d334b6731f6821a6f2_31bf3856ad364e35_6.1.7601.22865_none_2c837590554c9b45.manifest
File version	Not applicable
File size	706
Date (UTC)	11-Nov-2014
Time (UTC)	12:01
Platform	Not applicable
File name	Amd64_be46c260ed3feac15d24bdf9f2212505_31bf3856ad364e35_6.1.7601.18658_none_2c7f837bc2410781.manifest
File version	Not applicable
File size	706
Date (UTC)	11-Nov-2014
Time (UTC)	12:01
Platform	Not applicable
File name	Amd64_microsoft-windows-tdi-over-tcpip_31bf3856ad364e35_6.1.7601.18658_none_483c7a50f2d21ee0.manifest
File version	Not applicable
File size	2,926
Date (UTC)	11-Nov-2014
Time (UTC)	03:56
Platform	Not applicable
File name	Amd64_microsoft-windows-tdi-over-tcpip_31bf3856ad364e35_6.1.7601.22865_none_48b848380bfa8bbd.manifest
File version	Not applicable
File size	2,926
Date (UTC)	11-Nov-2014
Time (UTC)	04:19
Platform	Not applicable
File name	Update.mum
File version	Not applicable
File size	2,352
Date (UTC)	11-Nov-2014
Time (UTC)	12:01
Platform	Not applicable

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

File property	Value
File name	Ia64_7f1e92ffd401149c928518b6f9f7e539_31bf3856ad364e35_6.1.7601.22865_none_dcae6d9251c75a58.manifest
File version	Not applicable
File size	704
Date (UTC)	11-Nov-2014
Time (UTC)	12:01
Platform	Not applicable
File name	Ia64_fc25a9a0f6f4acf9eed4f8b0f3ed8111_31bf3856ad364e35_6.1.7601.18658_none_a6e819b31eb5bfc5.manifest
File version	Not applicable
File size	704
Date (UTC)	11-Nov-2014
Time (UTC)	12:01
Platform	Not applicable
File name	Ia64_microsoft-windows-tdi-over-tcpip_31bf3856ad364e35_6.1.7601.18658_none_ec1f82c33a72b6a6.manifest
File version	Not applicable
File size	2,925
Date (UTC)	11-Nov-2014
Time (UTC)	03:13
Platform	Not applicable
File name	Ia64_microsoft-windows-tdi-over-tcpip_31bf3856ad364e35_6.1.7601.22865_none_ec9b50aa539b2383.manifest
File version	Not applicable
File size	2,925
Date (UTC)	11-Nov-2014
Time (UTC)	03:44
Platform	Not applicable
File name	Update.mum
File version	Not applicable
File size	1,447
Date (UTC)	11-Nov-2014
Time (UTC)	12:01
Platform	Not applicable

See How to disable IPv6 to understand the DisabledComponents registry entry.

References

See the terminology that Microsoft uses to describe software updates.

Last Updated: Mar 11, 2015