taskhost.exe DfpCommon.dll thread high CPU utilization

Question

What wrong with it?

Stack:

ntoskrnl.exe!KeSynchronizeExecution+0x2246

ntoskrnl.exe!KeRemoveQueueEx+0x108e

ntoskrnl.exe!KeRemoveQueueEx+0xae9

ntoskrnl.exe!KeWaitForSingleObject+0x22a

ntoskrnl.exe!KeSetBasePriorityThread+0x4ec

ntoskrnl.exe!KeRemoveQueueEx+0x281d

ntoskrnl.exe!KeSynchronizeExecution+0x4133

DfpCommon.dll!IsRunningElevated+0x5e98

DfpCommon.dll!DllUnregisterServer+0xda7e

DfpCommon.dll!DllUnregisterServer+0xe49d

DfpCommon.dll!DllUnregisterServer+0xedc4

DfpCommon.dll!DllUnregisterServer+0xeafe

DfpCommon.dll!DllUnregisterServer+0x161e5

DfpCommon.dll!DllUnregisterServer+0x1a8a0

DfpCommon.dll!DllUnregisterServer+0x1a9a7

DfpCommon.dll!DllUnregisterServer+0x1a7fb

DfpCommon.dll!DllUnregisterServer+0x19782

DfpCommon.dll!DllUnregisterServer+0x1c537

DfpCommon.dll!DllUnregisterServer+0x1f340

DfpCommon.dll!DllUnregisterServer+0x1eb24

DfpCommon.dll!IsRunningElevated+0x17e3c

DfpCommon.dll!IsRunningElevated+0x17ff6

KERNEL32.DLL!BaseThreadInitThunk+0xd

ntdll.dll!RtlUserThreadStart+0x1d

DfpCommon.dll v.6.3.9600.17031

Answer 1

OK i have a temporary fix for that:

Go to "Task Scheduler" "Microsoft" "Windows" "DiskFootPrint" and disable the "Diagnostics" Task.

Answer 2

Hi Izumi,

Please answer these questions.

1. Do you use a 3^rd^ party antivirus application on your computer?
2. Did you make any changes to the computer prior to this issue?

TASKHOST is a generic process which acts as a host for processes that run from DLLs rather than EXEs. At startup TASKHOST checks the Services portion of the Registry to construct a list of DLL-based services that it needs to load, and then loads them. There can be many instances of TASKHOST running, as there will be one instance of TASKHOST for every DLL-based service or grouping of services.

I would recommend you to run the Process Explorer and check the applications causing high CPU usage.

Process Explorer v16.02.

http://technet.microsoft.com/en-us/sysinternals/bb896653.aspx

I would suggest you to scan your computer with Microsoft Safety Scanner, which would help us to get rid of virus, spyware, and other malicious software.

The Microsoft Safety Scanner is a free downloadable security tool that provides on-demand scanning and helps remove virus, spyware, and other malicious software. It works with your existing antivirus software.

http://www.microsoft.com/security/scanner/en-us/default.aspx

Note: The Microsoft Safety Scanner expires 10 days after being downloaded. To rerun a scan with the latest anti-malware definitions, download and run the Microsoft Safety Scanner again.

Note: Any data files that are infected may only be cleaned by deleting the file entirely, which means there is a potential for data loss.

Hope this information helps you. Please do let us know if you need further assistance, we will be happy to help you.

Answer 3

Hello.

1. I use only default "Windows Defender".
2. This issue not appears before Update 1.

I already have Process Explorer (see screenshot in the first post) and selected thread shows high cpu utilization. Also in first post i provide Stack of this thread.

I think DfpCommon.dll (disk footprint lib) provide this issue. But i not sure.

Answer 4

Hi,

Thank you for the reply.

As a work around, I would suggest you to check the issue status in safe and clean boot.

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Step 1:

Windows Startup Settings (including safe mode).

http://windows.microsoft.com/en-us/windows-8/windows-startup-settings-including-safe-mode

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Step 2:          

How to perform a clean boot to troubleshoot a problem in Windows Vista, Windows 7, or Windows 8.

http://support.microsoft.com/kb/929135

Note: Please go through the section: “How to reset the computer to start as usual after troubleshooting with clean boot” of the Kb article to boot the computer in normal startup after fixing the issue.

Answer 5

Soon i will try check this issue in safe-mode. But now i also can repeat this issue on Surface Pro with Win8.1ProUpdate1. In all cases this issue appears after returning system from long idle time. In this state Windows automaticaly runs optimization actions (in system tray white flag icon appears with black clocks).

I think that Windows don't run optimization services in safe-mode, so this issue cannot be checked in safe-mode.