Symptoms

You try to run unit tests in parallel by using Visual Studio 2010 or by using the MSTest.exe command on a computer that has multiple CPUs or a single CPU that has multiple cores. If you set the parallelTestCount attribute in the test settings file to a value greater than 1, all the tests may be canceled after they run for some time.

Resolution

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 website:

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 have Microsoft Visual Studio 2010 Service Pack 1 (SP1) installed.

Restart information

You may have to restart the computer after you apply this hotfix if the affected files are being used. We recommend that you exit any instances of Visual Studio, its applications, or any .NET Framework applications before 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.

Microsoft Visual Studio 2010 Service Pack 1

File name

File version

File size

Date

Time

Platform

Leviewer.exe

10.0.40219.355

117,584

22-Oct-2011

12:51

x86

Microsoft.teamfoundation.build.client.dll

10.0.40219.355

435,080

20-Oct-2011

20:37

x86

Microsoft.teamfoundation.client.dll

10.0.40219.355

1,592,704

20-Oct-2011

20:37

x86

Microsoft.teamfoundation.common.dll

10.0.40219.355

523,136

20-Oct-2011

20:37

x86

Microsoft.teamfoundation.controls.dll

10.0.40219.355

937,856

22-Oct-2011

12:51

x86

Microsoft.teamfoundation.dll

10.0.40219.355

674,672

20-Oct-2011

20:37

x86

Microsoft.teamfoundation.lab.activities.dll

10.0.40219.355

767,888

22-Oct-2011

12:51

x86

Microsoft.teamfoundation.lab.client.dll

10.0.40219.355

152,456

20-Oct-2011

20:37

x86

Microsoft.teamfoundation.lab.uiutils.dll

10.0.40219.355

266,120

22-Oct-2011

12:51

x86

Microsoft.teamfoundation.lab.workflow.activities.dll

10.0.40219.355

439,712

22-Oct-2011

12:51

x86

Microsoft.teamfoundation.officeintegration.project.dll

10.0.40219.355

516,520

22-Oct-2011

12:51

x86

Microsoft.teamfoundation.testmanagement.activities.common.dll

10.0.40219.355

314,296

22-Oct-2011

12:51

x86

Microsoft.teamfoundation.testmanagement.activities.dll

10.0.40219.355

1,511,336

22-Oct-2011

12:51

x86

Microsoft.teamfoundation.testmanagement.activityruntime.dll

10.0.40219.355

219,056

22-Oct-2011

12:51

x86

Microsoft.teamfoundation.testmanagement.client.dll

10.0.40219.355

684,448

20-Oct-2011

20:37

x86

Microsoft.teamfoundation.testmanagement.client.themes.dll

10.0.40219.355

3,058,096

22-Oct-2011

12:51

x86

Microsoft.teamfoundation.testmanagement.client.wpfcontrols.dll

10.0.40219.355

256,952

22-Oct-2011

12:51

x86

Microsoft.teamfoundation.testmanagement.clientpackage.dll

10.0.40219.355

73,136

22-Oct-2011

12:51

x86

Microsoft.teamfoundation.testmanagement.common.dll

10.0.40219.355

33,696

20-Oct-2011

20:37

x86

Microsoft.teamfoundation.testmanagement.controller.dll

10.0.40219.355

119,720

22-Oct-2011

12:51

x86

Microsoft.teamfoundation.testmanagement.controls.dll

10.0.40219.355

493,472

22-Oct-2011

12:51

x86

Microsoft.teamfoundation.testmanagement.controls.wpfworkitemcontrols.dll

10.0.40219.355

99,280

22-Oct-2011

12:51

x86

Microsoft.teamfoundation.versioncontrol.client.dll

10.0.40219.355

704,928

20-Oct-2011

20:37

x86

Microsoft.teamfoundation.versioncontrol.common.dll

10.0.40219.355

231,840

20-Oct-2011

20:37

x86

Microsoft.teamfoundation.versioncontrol.controls.dll

10.0.40219.355

4,438,432

22-Oct-2011

12:51

x86

Microsoft.teamfoundation.workitemtracking.client.dll

10.0.40219.355

698,272

20-Oct-2011

20:37

x86

Microsoft.teamfoundation.workitemtracking.controls.dll

10.0.40219.355

1,213,352

22-Oct-2011

12:51

x86

Microsoft.teamfoundation.workitemtracking.proxy.dll

10.0.40219.355

390,048

20-Oct-2011

20:37

x86

Microsoft.visualstudio.qualitytools.agentobject.dll

10.0.40219.355

105,376

22-Oct-2011

12:51

x86

Microsoft.visualstudio.qualitytools.common.dll

10.0.40219.355

1,353,616

22-Oct-2011

12:51

x86

Microsoft.visualstudio.qualitytools.controllerobject.dll

10.0.40219.355

275,368

22-Oct-2011

12:51

x86

Microsoft.visualstudio.qualitytools.executioncommon.dll

10.0.40219.355

480,168

22-Oct-2011

12:51

x86

Microsoft.visualstudio.qualitytools.testcasemanagement.dll

10.0.40219.355

1,278,896

22-Oct-2011

12:51

x86

Microsoft.visualstudio.qualitytools.tmi.dll

10.0.40219.355

397,712

22-Oct-2011

12:51

x86

Microsoft.visualstudio.teamfoundation.build.dll

10.0.40219.355

141,720

22-Oct-2011

12:51

x86

Microsoft.visualstudio.teamfoundation.dll

10.0.40219.355

93,064

22-Oct-2011

12:51

x86

Microsoft.visualstudio.teamfoundation.teamexplorer.dll

10.0.40219.355

798,120

22-Oct-2011

12:51

x86

Microsoft.visualstudio.teamfoundation.versioncontrol.dll

10.0.40219.355

58,288

22-Oct-2011

12:51

x86

Microsoft.visualstudio.teamfoundation.versioncontrol.dll

10.0.40219.355

58,800

22-Oct-2011

12:51

x86

Microsoft.visualstudio.teamfoundation.versioncontrol.dll

10.0.40219.355

60,336

22-Oct-2011

12:51

x86

Microsoft.visualstudio.teamfoundation.versioncontrol.dll

10.0.40219.355

62,896

22-Oct-2011

12:51

x86

Microsoft.visualstudio.teamfoundation.versioncontrol.dll

10.0.40219.355

939,432

22-Oct-2011

12:51

x86

Microsoft.visualstudio.teamfoundation.workitemtracking.dll

10.0.40219.355

460,208

22-Oct-2011

12:51

x86

Microsoft.visualstudio.teamsystem.integration.dll

10.0.40219.355

192,408

22-Oct-2011

12:51

x86

Microsoft.visualstudio.testtools.manualtest.common.dll

10.0.40219.355

812,456

22-Oct-2011

12:51

x86

Microsoft.visualstudio.testtools.uitest.extension.ie.dll

10.0.40219.355

250,280

22-Oct-2011

12:51

x86

Microsoft.visualstudio.testtools.uitest.extension.uia.dll

10.0.40219.355

106,416

22-Oct-2011

12:51

x86

Msdiff.dll

10.0.40219.355

484,680

22-Oct-2011

12:51

x86

Mtm.exe

10.0.40219.355

448,328

22-Oct-2011

12:51

x86

Qtagent.exe

10.0.40219.355

20,304

22-Oct-2011

12:51

x86

Qtagent32.exe

10.0.40219.355

20,304

22-Oct-2011

12:51

x86

Qtagent32.exe

10.0.40219.355

20,312

22-Oct-2011

12:51

x86

Tf.exe

10.0.40219.355

324,928

22-Oct-2011

12:51

x86

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 how to run unit tests in parallel to speed up your test execution time, visit the following Microsoft Developer Network (MSDN) website:

How to run unit tests faster using a computer with multiple CPUs or coresFor more information about the MSTest.exe command, visit the following MSDN website:

MSTest.exe command-line optionsFor 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

Need more help?

Expand your skills
Explore Training
Get new features first
Join Microsoft Insiders

Was this information helpful?

What affected your experience?

Any additional feedback? (Optional)

Thank you for your feedback!

×