Summary
This article (KB981836) provides a fix for a network connection problem in which the connection drops on Windows Server 2003-based Hyper-V virtual machines (VMs). This issue occurs when the VMs are running under a heavy load. For detailed information, see the “Symptoms,” “Cause,” and “Resolution” sections of this article. To download the fix for this issue, click the View and request hotfix downloads link that is located on the upper-left of the screen.
Symptoms
Consider the following scenario:
-
You install the Hyper-V role on a computer that is running Windows Server 2008 R2.
-
The computer hosts a virtual machine (VM) that is running Windows Server 2003.
-
The VM is running under a heavy load.
In this scenario, the network connection of the VM is lost and then resumes. The length of time in which there is no network connection may last from several seconds to several minutes.When this connection problem occurs, one or both of the following events are logged in the System log on the VM:
Event Type: WarningEvent Source: netvscEvent Category: NoneEvent ID: 5Date: <date>Time: <time>User: N/AComputer: <computer name>Description: The miniport '<network adapter name>' hung.
Event Type: WarningEvent Source: netvscEvent Category: NoneEvent ID: 4Date: <date>Time: <time>User: N/AComputer: <computer name>Description: The miniport '<network adapter name>' reset.
Resolution
This hotfix is also available at Microsoft Update Catalog.After you install this hotfix on the Hyper-V server, you must update the integration components in the VM that is running Windows Server 2003. To do this, open the Virtual Machine Connection tool to connect to the VM in Hyper-V Manager, and then click Insert Integration Services Setup Disk on the Action menu.
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, visit the following Microsoft Web site:
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.
Prerequisites
To apply this hotfix, you must be running Windows Server 2008 R2 on the computer. Additionally, the computer must have the Hyper-V role installed.
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.
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 2008 R2 file information notes
-
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 2008 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 x64-based versions of Windows Server 2008 R2
|
File name |
File version |
File size |
Date |
Time |
Platform |
Service branch |
|---|---|---|---|---|---|---|
|
Windows5.x-hypervintegrationservices-x64.msi |
Not applicable |
1,454,592 |
03-Apr-2010 |
07:43 |
Not applicable |
Not applicable |
|
Netvsc50.sys |
6.1.7600.20683 |
105,472 |
03-Apr-2010 |
03:04 |
x64 |
Not applicable |
|
Netvsc60.sys |
6.1.7600.20683 |
172,544 |
03-Apr-2010 |
03:04 |
x64 |
Not applicable |
|
Netvscres.dll |
6.1.7600.16385 |
42,496 |
14-Jul-2009 |
01:30 |
x64 |
Not applicable |
|
Passthruparser.sys |
6.1.7600.16385 |
20,480 |
13-Jul-2009 |
23:42 |
x64 |
AMD64_WSTORVSP.INF_31BF3856AD364E35_6.1.7600.20683_NONE_8ABC4AACE145A298 |
|
Storvsp.sys |
6.1.7600.20683 |
120,320 |
03-Apr-2010 |
03:04 |
x64 |
AMD64_WSTORVSP.INF_31BF3856AD364E35_6.1.7600.20683_NONE_8ABC4AACE145A298 |
|
Vhdparser.sys |
6.1.7600.16385 |
17,408 |
13-Jul-2009 |
23:42 |
x64 |
AMD64_WSTORVSP.INF_31BF3856AD364E35_6.1.7600.20683_NONE_8ABC4AACE145A298 |
|
Vmbus.sys |
6.1.7600.20683 |
200,584 |
03-Apr-2010 |
07:35 |
x64 |
Not applicable |
|
Vmbuscoinstaller.dll |
6.1.7600.16385 |
130,048 |
13-Jul-2009 |
23:42 |
x64 |
Not applicable |
|
Vmbuspipe.dll |
6.1.7600.16385 |
15,360 |
13-Jul-2009 |
23:42 |
x64 |
Not applicable |
|
Vmbusres.dll |
6.1.7600.16385 |
44,544 |
14-Jul-2009 |
01:30 |
x64 |
Not applicable |
|
Winhv.sys |
6.1.7600.16385 |
52,304 |
14-Jul-2009 |
01:48 |
x64 |
Not applicable |
|
Vmsntfy.dll |
6.1.7600.20683 |
72,192 |
03-Apr-2010 |
07:27 |
x64 |
Not applicable |
|
Vmswitch.sys |
6.1.7600.20683 |
403,968 |
03-Apr-2010 |
03:04 |
x64 |
Not applicable |
|
Windows5.x-hypervintegrationservices-x86.msi |
Not applicable |
1,014,272 |
03-Apr-2010 |
08:11 |
Not applicable |
Not applicable |
Status
Microsoft has confirmed that this is a problem in the Microsoft products that are listed in the "Applies to" section.
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 2008 R2
Additional files for all supported x64-based versions of Windows Server 2008 R2
|
File name |
Amd64_0fdc9776732b71cc126d1e61246fdebe_31bf3856ad364e35_6.1.7600.20683_none_ab5ace2b4574fadc.manifest |
|
File version |
Not applicable |
|
File size |
1,082 |
|
Date (UTC) |
06-Apr-2010 |
|
Time (UTC) |
07:16 |
|
File name |
Amd64_6f5b35e519a8ee06f349b3d193b8ab09_31bf3856ad364e35_6.1.7600.20683_none_635289eb0f7cb1ae.manifest |
|
File version |
Not applicable |
|
File size |
1,082 |
|
Date (UTC) |
06-Apr-2010 |
|
Time (UTC) |
07:16 |
|
File name |
Amd64_microsoft-hyper-v-g..aller-win5x-package_31bf3856ad364e35_6.1.7600.20683_none_2ea9bb90bd24947d.manifest |
|
File version |
Not applicable |
|
File size |
2,273 |
|
Date (UTC) |
03-Apr-2010 |
|
Time (UTC) |
09:36 |
|
File name |
Amd64_microsoft-hyper-v-g..aller-win60-package_31bf3856ad364e35_6.1.7600.20683_none_94f598c4ee356376.manifest |
|
File version |
Not applicable |
|
File size |
3,369 |
|
Date (UTC) |
03-Apr-2010 |
|
Time (UTC) |
10:10 |
|
File name |
Amd64_wnetvsc.inf_31bf3856ad364e35_6.1.7600.20683_none_b39abd74024c3ab0.manifest |
|
File version |
Not applicable |
|
File size |
2,657 |
|
Date (UTC) |
06-Apr-2010 |
|
Time (UTC) |
07:16 |
|
File name |
Amd64_wstorvsp.inf_31bf3856ad364e35_6.1.7600.20683_none_8abc4aace145a298.manifest |
|
File version |
Not applicable |
|
File size |
3,047 |
|
Date (UTC) |
06-Apr-2010 |
|
Time (UTC) |
07:16 |
|
File name |
Amd64_wvmbus.inf_31bf3856ad364e35_6.1.7600.20683_none_95fd3749dcd7cc6a.manifest |
|
File version |
Not applicable |
|
File size |
3,731 |
|
Date (UTC) |
06-Apr-2010 |
|
Time (UTC) |
07:16 |
|
File name |
Amd64_wvms_pp.inf_31bf3856ad364e35_6.1.7600.20683_none_bf6225082432cf76.manifest |
|
File version |
Not applicable |
|
File size |
2,772 |
|
Date (UTC) |
03-Apr-2010 |
|
Time (UTC) |
09:37 |
|
File name |
Update.mum |
|
File version |
Not applicable |
|
File size |
2,371 |
|
Date (UTC) |
06-Apr-2010 |
|
Time (UTC) |
07:16 |
|
File name |
X86_microsoft-hyper-v-g..aller-win5x-package_31bf3856ad364e35_6.1.7600.20683_none_d28b200d04c72347.manifest |
|
File version |
Not applicable |
|
File size |
2,269 |
|
Date (UTC) |
03-Apr-2010 |
|
Time (UTC) |
08:33 |
|
File name |
X86_microsoft-hyper-v-g..aller-win60-package_31bf3856ad364e35_6.1.7600.20683_none_38d6fd4135d7f240.manifest |
|
File version |
Not applicable |
|
File size |
3,363 |
|
Date (UTC) |
03-Apr-2010 |
|
Time (UTC) |
08:47 |
