Applies ToWindows Vista Business Windows Vista Enterprise Windows Vista Home Basic Windows Vista Home Premium Windows Vista Starter Windows Vista Ultimate Windows Server 2008 Datacenter Windows Server 2008 Datacenter without Hyper-V Windows Server 2008 Enterprise Windows Server 2008 Enterprise without Hyper-V Windows Server 2008 for Itanium-Based Systems Windows Server 2008 Foundation Windows Server 2008 Standard Windows Server 2008 Standard without Hyper-V

Symptoms

You schedule a task on a computer that is running Windows Vista or Windows Server 2008. However, the scheduled task is forcibly canceled by the TaskEng.exe process. Additionally, the following events are logged:

Cause

This issue occurs because the task engine has a 5-minute timer which starts after task execution ends and when there are no other active tasks. The task engine shuts down if no new tasks are triggered by the time that this timer expires. If a task is scheduled to run at the same moment that this timer expires, the task execution is canceled and the issue that is described in the "Symptoms" section occurs.

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=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 one of the following operating systems:

  • Windows Vista Service Pack 2 (SP2)

  • Windows Server 2008 Service Pack 2 (SP2)

For more information about how to obtain a Windows Vista service pack, click the following article number to view the article in the Microsoft Knowledge Base:

935791 How to obtain the latest Windows Vista service packFor more information about how to obtain a Windows Server 2008 service pack, click the following article number to view the article in the Microsoft Knowledge Base:

968849 How to obtain the latest service pack for Windows Server 2008

Registry information

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

Restart requirement

You must 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 Vista and Windows Server 2008 file information notes

Important Windows Vista hotfixes and Windows Server 2008 hotfixes are included in the same packages. However, only "Windows Vista" 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 Vista" 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, SR_Level (RTM, SPn), and service branch (LDR, GDR) can be identified by examining the file version numbers as shown in the following table.

    Version

    Product

    SR_Level

    Service branch

    6.0.600 2. 22xxx

    Windows Vista and Windows Server 2008

    SP2

    LDR

  • Service Pack 1 is integrated into the release version of Windows Server 2008. Therefore, RTM milestone files apply only to Windows Vista. RTM milestone files have a 6.0.0000.xxxxx version number.

  • 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 and for Windows Vista" section. MUM files 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 Server 2008 and of Windows Vista

File name

File version

File size

Date

Time

Tmm.dll

6.0.6002.22748

1,298,432

28-Nov-2011

16:21

Hashcleanup.exe

6.0.6002.22748

9,728

28-Nov-2011

13:23

Taskeng.exe

6.0.6002.22748

171,520

28-Nov-2011

13:24

Taskeng.mof

Not applicable

2,254

15-Nov-2011

15:19

Schedsvc.dll

6.0.6002.22748

602,112

28-Nov-2011

16:21

Schedsvc.mof

Not applicable

2,250

15-Nov-2011

15:19

Wmicmiplugin.dll

6.0.6002.22748

345,600

28-Nov-2011

16:21

For all supported x64-based versions of Windows Server 2008 and of Windows Vista

File name

File version

File size

Date

Time

Tmm.dll

6.0.6002.22748

1,319,424

28-Nov-2011

15:37

Hashcleanup.exe

6.0.6002.22748

10,240

28-Nov-2011

13:40

Taskeng.exe

6.0.6002.22748

267,776

28-Nov-2011

13:40

Taskeng.mof

Not applicable

2,254

15-Mar-2011

05:07

Schedsvc.dll

6.0.6002.22748

856,064

28-Nov-2011

15:37

Schedsvc.mof

Not applicable

2,250

15-Mar-2011

05:07

Wmicmiplugin.dll

6.0.6002.22748

500,224

28-Nov-2011

15:38

Schedsvc.mof

Not applicable

2,250

15-Nov-2011

15:19

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

File name

File version

File size

Date

Time

Hashcleanup.exe

6.0.6002.22748

20,480

28-Nov-2011

13:43

Taskeng.exe

6.0.6002.22748

523,264

28-Nov-2011

13:44

Taskeng.mof

Not applicable

2,254

15-Mar-2011

06:01

Schedsvc.dll

6.0.6002.22748

1,417,728

28-Nov-2011

15:21

Schedsvc.mof

Not applicable

2,250

15-Mar-2011

06:01

Wmicmiplugin.dll

6.0.6002.22748

986,624

28-Nov-2011

15:23

Schedsvc.mof

Not applicable

2,250

15-Nov-2011

15:19

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 Vista and for Windows Server 2008

Additional files for all supported x86-based versions of Windows Vista and of Windows Server 2008

File name

X86_032d5a5f70f22525e7acd66f30d1d07b_31bf3856ad364e35_6.0.6002.22748_none_32806782b8ca49b0.manifest

File version

Not applicable

File size

713

Date (UTC)

28-Nov-2011

Time (UTC)

20:15

File name

X86_048cc9d3b5c9bdd1bb3ba8130da2dbc1_31bf3856ad364e35_6.0.6002.22748_none_d00a5d3e35de2d39.manifest

File version

Not applicable

File size

1,406

Date (UTC)

28-Nov-2011

Time (UTC)

20:15

File name

X86_98478e4315e7d1907a97bc42d47e40ca_31bf3856ad364e35_6.0.6002.22748_none_9892a07143a7c92f.manifest

File version

Not applicable

File size

700

Date (UTC)

28-Nov-2011

Time (UTC)

20:15

File name

X86_microsoft-windows-mobilepc-tmm_31bf3856ad364e35_6.0.6002.22748_none_16ac1e58d5af0e35.manifest

File version

Not applicable

File size

10,104

Date (UTC)

28-Nov-2011

Time (UTC)

16:42

File name

X86_microsoft-windows-t..ched-hashcleanup-gc_31bf3856ad364e35_6.0.6002.22748_none_55ad897e7f967f38.manifest

File version

Not applicable

File size

3,210

Date (UTC)

28-Nov-2011

Time (UTC)

16:42

File name

X86_microsoft-windows-taskscheduler-engine_31bf3856ad364e35_6.0.6002.22748_none_e7f92f97d5378320.manifest

File version

Not applicable

File size

8,325

Date (UTC)

28-Nov-2011

Time (UTC)

16:44

File name

X86_microsoft-windows-taskscheduler-service_31bf3856ad364e35_6.0.6002.22748_none_314e00faad5f8e81.manifest

File version

Not applicable

File size

116,813

Date (UTC)

28-Nov-2011

Time (UTC)

16:44

File name

X86_microsoft-windows-wmi-cmiplugin_31bf3856ad364e35_6.0.6002.22748_none_bf4f6f504264e27f.manifest

File version

Not applicable

File size

6,171

Date (UTC)

28-Nov-2011

Time (UTC)

16:43

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

File name

Amd64_11f20013dfefeb3d6c568eec76aba978_31bf3856ad364e35_6.0.6002.22748_none_f87f9e320b604879.manifest

File version

Not applicable

File size

2,121

Date (UTC)

28-Nov-2011

Time (UTC)

20:15

File name

Amd64_429880336513c04a594a0c1cbc7e0005_31bf3856ad364e35_6.0.6002.22748_none_173ce1a255fe5570.manifest

File version

Not applicable

File size

1,048

Date (UTC)

28-Nov-2011

Time (UTC)

20:15

File name

Amd64_e35ee4b46544251a5fb42a4f245aa9af_31bf3856ad364e35_6.0.6002.22748_none_196449bb6fba5aee.manifest

File version

Not applicable

File size

717

Date (UTC)

28-Nov-2011

Time (UTC)

20:15

File name

Amd64_microsoft-windows-mobilepc-tmm_31bf3856ad364e35_6.0.6002.22748_none_72cab9dc8e0c7f6b.manifest

File version

Not applicable

File size

10,444

Date (UTC)

28-Nov-2011

Time (UTC)

15:55

File name

Amd64_microsoft-windows-t..ched-hashcleanup-gc_31bf3856ad364e35_6.0.6002.22748_none_b1cc250237f3f06e.manifest

File version

Not applicable

File size

3,530

Date (UTC)

28-Nov-2011

Time (UTC)

15:55

File name

Amd64_microsoft-windows-taskscheduler-engine_31bf3856ad364e35_6.0.6002.22748_none_4417cb1b8d94f456.manifest

File version

Not applicable

File size

8,359

Date (UTC)

28-Nov-2011

Time (UTC)

15:57

File name

Amd64_microsoft-windows-taskscheduler-service_31bf3856ad364e35_6.0.6002.22748_none_8d6c9c7e65bcffb7.manifest

File version

Not applicable

File size

116,855

Date (UTC)

28-Nov-2011

Time (UTC)

15:57

File name

Amd64_microsoft-windows-wmi-cmiplugin_31bf3856ad364e35_6.0.6002.22748_none_1b6e0ad3fac253b5.manifest

File version

Not applicable

File size

6,193

Date (UTC)

28-Nov-2011

Time (UTC)

15:56

File name

Wow64_microsoft-windows-taskscheduler-service_31bf3856ad364e35_6.0.6002.22748_none_97c146d09a1dc1b2.manifest

File version

Not applicable

File size

109,099

Date (UTC)

28-Nov-2011

Time (UTC)

16:26

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

File name

Ia64_5973b904de91425a016726b3457182d8_31bf3856ad364e35_6.0.6002.22748_none_043d454d21cded2a.manifest

File version

Not applicable

File size

2,117

Date (UTC)

28-Nov-2011

Time (UTC)

20:15

File name

Ia64_67477091861d1dc9107bd5220acce2fa_31bf3856ad364e35_6.0.6002.22748_none_538660f856b2d39b.manifest

File version

Not applicable

File size

715

Date (UTC)

28-Nov-2011

Time (UTC)

20:15

File name

Ia64_microsoft-windows-t..ched-hashcleanup-gc_31bf3856ad364e35_6.0.6002.22748_none_55af2d747f948834.manifest

File version

Not applicable

File size

3,525

Date (UTC)

28-Nov-2011

Time (UTC)

15:32

File name

Ia64_microsoft-windows-taskscheduler-engine_31bf3856ad364e35_6.0.6002.22748_none_e7fad38dd5358c1c.manifest

File version

Not applicable

File size

8,342

Date (UTC)

28-Nov-2011

Time (UTC)

15:34

File name

Ia64_microsoft-windows-taskscheduler-service_31bf3856ad364e35_6.0.6002.22748_none_314fa4f0ad5d977d.manifest

File version

Not applicable

File size

116,834

Date (UTC)

28-Nov-2011

Time (UTC)

15:34

File name

Ia64_microsoft-windows-wmi-cmiplugin_31bf3856ad364e35_6.0.6002.22748_none_bf5113464262eb7b.manifest

File version

Not applicable

File size

6,182

Date (UTC)

28-Nov-2011

Time (UTC)

15:34

File name

Wow64_microsoft-windows-taskscheduler-service_31bf3856ad364e35_6.0.6002.22748_none_97c146d09a1dc1b2.manifest

File version

Not applicable

File size

109,099

Date (UTC)

28-Nov-2011

Time (UTC)

16:26

Need more help?

Want more options?

Explore subscription benefits, browse training courses, learn how to secure your device, and more.

Communities help you ask and answer questions, give feedback, and hear from experts with rich knowledge.