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Windows Server 2012 R2 NVGRE gateway cannot establish outgoing connections

View products that this article applies to.

Symptoms

After some hours or days, a Windows Server 2012 R2 Network Virtualization that uses Generic Routing Encapsulation (NVGRE) gateways cannot establish outgoing UDP or TCP connections intermittently.

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Cause

This issue occurs because Windows Filtering Platform (WFP) blocks bind requests.

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Resolution

Hotfix information

A supported hotfix is available from Microsoft. However, this hotfix is intended to correct only the problem that 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=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 Windows Server 2012 R2.

Registry information

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

Restart requirement

You might 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 Server 2012 R2 file information notes
Important Windows Server 2012 R2 hotfixes are included in the same packages. 
  • 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 0.16xxxWindows 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 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.
For all supported x64-based versions of Windows Server 2012 R2
File nameFile versionFile sizeDateTimePlatform
Winnat.sys6.3.9600.16519172,54422-Jan-201409:10x64

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Status

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

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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 Server 2012 R2
Additional files for all supported x64-based versions of Windows Server 2012 R2
File propertyValue
File nameAmd64_f657ab0bada9aca780a71f4ab49132c7_31bf3856ad364e35_6.3.9600.16519_none_cf6a5660af76326c.manifest
File versionNot applicable
File size698
Date (UTC)23-Jan-2014
Time (UTC)15:33
PlatformNot applicable
File nameAmd64_microsoft-windows-winnat_31bf3856ad364e35_6.3.9600.16519_none_a7b2e3a16ff583cb.manifest
File versionNot applicable
File size71,119
Date (UTC)22-Jan-2014
Time (UTC)15:49
PlatformNot applicable

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Keywords: kb, kbautohotfix, kbqfe, kbhotfixserver, kbfix, kbsurveynew, kbexpertiseadvanced

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Article Info
Article ID : 2918813
Revision : 1
Created on : 1/7/2017
Published on : 2/12/2014
Exists online : False
Views : 217