Host Process For Windows Taskhostw.exe Stopped Working: Event ID 1000

Anonymous

I noticed upon checking my Event Log Applications and my Reliability Monitor I have been getting this critical error about every 2 to 3 days now on my HP Omen i7 -16 GB Mem - Nvidia GEForce GTX 1070 on Win10 Home 64 bit and this did not start happening until I updated to v1903 on May 30^th^ . My build is 18362.239. Could someone please advise me as how to resolve this or MS deploy a fix for this. It appears I am not the only one getting these. I have reported this through the Feedback Hub. I have run all three DISMs, SFC, Malwarebytes, Norton and I turned on Windows Defender long enough for a quick scan and no problems seen. It appears this is a scheduled task that keeps failing instead of running to completion.

Log Name: Application

Source: Application Error

Date: 6/18/2019 3:04:17 PM

Event ID: 1000

Task Category: (100)

Level: Error

Keywords: Classic

User: N/A

Computer: DESKTOP-JE8LEU6

Description:

Faulting application name: taskhostw.exe, version: 10.0.18362.1, time stamp: 0xe9bfb510

Faulting module name: unbcl.dll, version: 10.0.18362.1, time stamp: 0xe593abbb

Exception code: 0xc0000005

Fault offset: 0x0000000000047b22

Faulting process id: 0x2ea4

Faulting application start time: 0x01d525fefbf28b71

Faulting application path: C:\WINDOWS\system32\taskhostw.exe

Faulting module path: C:\WINDOWS\system32\oobe\unbcl.dll

Report Id: e2410c03-f6bf-462a-8545-72d8480a85b4

Faulting package full name:

Faulting package-relative application ID:

Event Xml:

<Channel>Application</Channel>

<Computer>DESKTOP-JE8LEU6</Computer>

</System>

<Data>taskhostw.exe</Data>

<Data>unbcl.dll</Data>

<Data>01d525fefbf28b71</Data>

<Data>C:\WINDOWS\system32\taskhostw.exe</Data>

<Data>C:\WINDOWS\system32\oobe\unbcl.dll</Data>

<Data>

</Data>

<Data>

</Data>

</EventData>

</Event>

This below is from Notepad about this error

Version=1

EventType=APPCRASH

EventTime=132053582578193450

ReportType=2

Consent=1

UploadTime=132053582584574055

ReportStatus=268435456

ReportIdentifier=00f879cd-2e56-43f0-a4c8-3daabf334e23

IntegratorReportIdentifier=e2410c03-f6bf-462a-8545-72d8480a85b4

Wow64Host=34404

NsAppName=taskhostw.exe

OriginalFilename=taskhostw.exe

AppSessionGuid=00002ea4-0000-0023-718b-f2fbfe25d501

TargetAppId=W:0000f519feec486de87ed73cb92d3cac802400000000!000030a630dd89b9565e4261891cf5b27244f1353bdd!taskhostw.exe

TargetAppVer=2094//04//09:12:37:36!207e3!taskhostw.exe

BootId=4294967295

ServiceSplit=1778118961

TargetAsId=4327

IsFatal=1

EtwNonCollectReason=4

Response.BucketId=bc35effd0d0ebd0863848b41635acba6

Response.BucketTable=4

Response.LegacyBucketId=1406402096602467238

Response.type=4

Sig[0].Name=Application Name

Sig[0].Value=taskhostw.exe

Sig[1].Name=Application Version

Sig[1].Value=10.0.18362.1

Sig[2].Name=Application Timestamp

Sig[2].Value=e9bfb510

Sig[3].Name=Fault Module Name

Sig[3].Value=unbcl.dll

Sig[4].Name=Fault Module Version

Sig[4].Value=10.0.18362.1

Sig[5].Name=Fault Module Timestamp

Sig[5].Value=e593abbb

Sig[6].Name=Exception Code

Sig[6].Value=c0000005

Sig[7].Name=Exception Offset

Sig[7].Value=0000000000047b22

DynamicSig[1].Name=OS Version

DynamicSig[1].Value=10.0.18362.2.0.0.768.101

DynamicSig[2].Name=Locale ID

DynamicSig[2].Value=1033

DynamicSig[22].Name=Additional Information 1

DynamicSig[22].Value=8f64

DynamicSig[23].Name=Additional Information 2

DynamicSig[23].Value=8f64a98f51ee7a1658f393b52b9cfd78

DynamicSig[24].Name=Additional Information 3

DynamicSig[24].Value=638a

DynamicSig[25].Name=Additional Information 4

DynamicSig[25].Value=638a1d22f84447604d2e55bcb40f315c

UI[2]=C:\WINDOWS\system32\taskhostw.exe

UI[5]=Check online for a solution (recommended)

UI[6]=Check for a solution later (recommended)

UI[7]=Close

UI[8]=Host Process for Windows Tasks stopped working and was closed

UI[9]=A problem caused the application to stop working correctly. Windows will notify you if a solution is available.

UI[10]=&Close

LoadedModule[0]=C:\WINDOWS\system32\taskhostw.exe

LoadedModule[1]=C:\WINDOWS\SYSTEM32\ntdll.dll

LoadedModule[2]=C:\WINDOWS\System32\KERNEL32.DLL

LoadedModule[3]=C:\WINDOWS\System32\KERNELBASE.dll

LoadedModule[4]=C:\WINDOWS\System32\msvcrt.dll

LoadedModule[5]=C:\WINDOWS\System32\RPCRT4.dll

LoadedModule[6]=C:\WINDOWS\System32\combase.dll

LoadedModule[7]=C:\WINDOWS\System32\ucrtbase.dll

LoadedModule[8]=C:\WINDOWS\System32\bcryptPrimitives.dll

LoadedModule[9]=C:\WINDOWS\System32\OLEAUT32.dll

LoadedModule[10]=C:\WINDOWS\System32\msvcp_win.dll

LoadedModule[11]=C:\WINDOWS\System32\imm32.dll

LoadedModule[12]=C:\WINDOWS\System32\USER32.dll

LoadedModule[13]=C:\WINDOWS\System32\win32u.dll

LoadedModule[14]=C:\WINDOWS\System32\GDI32.dll

LoadedModule[15]=C:\WINDOWS\System32\gdi32full.dll

LoadedModule[16]=C:\WINDOWS\System32\kernel.appcore.dll

LoadedModule[17]=C:\WINDOWS\System32\sechost.dll

LoadedModule[18]=C:\WINDOWS\System32\clbcatq.dll

LoadedModule[19]=C:\WINDOWS\system32\DeviceDirectoryClient.dll

LoadedModule[20]=C:\WINDOWS\System32\UMPDC.dll

LoadedModule[21]=C:\WINDOWS\System32\shcore.dll

LoadedModule[22]=C:\WINDOWS\System32\powrprof.dll

LoadedModule[23]=C:\WINDOWS\system32\MdmCommon.DLL

LoadedModule[24]=C:\WINDOWS\System32\cryptsp.dll

LoadedModule[25]=C:\WINDOWS\System32\CRYPT32.dll

LoadedModule[26]=C:\WINDOWS\System32\MSASN1.dll

LoadedModule[27]=C:\WINDOWS\system32\PROPSYS.dll

LoadedModule[28]=C:\WINDOWS\system32\netutils.dll

LoadedModule[29]=C:\WINDOWS\system32\samcli.dll

LoadedModule[30]=C:\WINDOWS\system32\WINHTTP.dll

LoadedModule[31]=C:\WINDOWS\SYSTEM32\rmclient.dll

LoadedModule[32]=C:\WINDOWS\SYSTEM32\policymanager.dll

LoadedModule[33]=C:\WINDOWS\System32\advapi32.dll

LoadedModule[34]=C:\WINDOWS\system32\msvcp110_win.dll

LoadedModule[35]=C:\Windows\System32\Windows.Web.dll

LoadedModule[36]=C:\Windows\System32\iertutil.dll

LoadedModule[37]=C:\WINDOWS\System32\IDStore.dll

LoadedModule[38]=C:\WINDOWS\System32\bcrypt.dll

LoadedModule[39]=C:\WINDOWS\System32\SAMLIB.dll

LoadedModule[40]=C:\WINDOWS\System32\wlidprov.dll

LoadedModule[41]=C:\Windows\System32\LocationFrameworkInternalPS.dll

LoadedModule[42]=C:\Windows\System32\LocationFrameworkPS.dll

LoadedModule[43]=C:\Windows\System32\wuapi.dll

LoadedModule[44]=C:\Windows\System32\wups.dll

LoadedModule[45]=C:\WINDOWS\system32\oobe\SetupCleanupTask.dll

LoadedModule[46]=C:\WINDOWS\System32\WINTRUST.dll

LoadedModule[47]=C:\WINDOWS\SYSTEM32\WDSCORE.dll

LoadedModule[48]=C:\WINDOWS\SYSTEM32\VERSION.dll

LoadedModule[49]=C:\WINDOWS\system32\oobe\unbcl.dll

LoadedModule[50]=C:\WINDOWS\System32\OLE32.dll

LoadedModule[51]=C:\WINDOWS\SYSTEM32\WTSAPI32.dll

LoadedModule[52]=C:\Windows\System32\UpdatePolicy.dll

LoadedModule[53]=C:\WINDOWS\System32\profapi.dll

LoadedModule[54]=C:\Windows\System32\Cabinet.dll

LoadedModule[55]=C:\Windows\System32\usoapi.dll

LoadedModule[56]=C:\WINDOWS\system32\wbem\wbemprox.dll

LoadedModule[57]=C:\WINDOWS\System32\WS2_32.dll

LoadedModule[58]=C:\WINDOWS\SYSTEM32\wbemcomn.dll

LoadedModule[59]=C:\WINDOWS\system32\wbem\wbemsvc.dll

LoadedModule[60]=C:\WINDOWS\system32\wbem\fastprox.dll

LoadedModule[61]=C:\WINDOWS\SYSTEM32\amsi.dll

LoadedModule[62]=C:\WINDOWS\SYSTEM32\USERENV.dll

LoadedModule[63]=C:\Windows\System32\FlightSettings.dll

LoadedModule[64]=C:\WINDOWS\System32\cfgmgr32.dll

LoadedModule[65]=C:\Windows\System32\bcd.dll

LoadedModule[66]=C:\Windows\System32\wosc.dll

LoadedModule[67]=C:\Windows\System32\Windows.Networking.Connectivity.dll

LoadedModule[68]=C:\WINDOWS\System32\npmproxy.dll

LoadedModule[69]=C:\Windows\System32\WinTypes.dll

LoadedModule[70]=C:\Windows\System32\IPHLPAPI.DLL

LoadedModule[71]=C:\WINDOWS\System32\NSI.dll

LoadedModule[72]=C:\Windows\System32\dusmapi.dll

LoadedModule[73]=C:\WINDOWS\System32\windows.storage.dll

LoadedModule[74]=C:\WINDOWS\System32\shlwapi.dll

LoadedModule[75]=C:\WINDOWS\system32\configmanager2.dll

LoadedModule[76]=C:\WINDOWS\system32\DMCmnUtils.dll

LoadedModule[77]=C:\WINDOWS\system32\dmiso8601utils.dll

LoadedModule[78]=C:\WINDOWS\system32\DMOleAutUtils.dll

LoadedModule[79]=C:\WINDOWS\system32\enterpriseresourcemanager.dll

LoadedModule[80]=C:\WINDOWS\system32\dmEnrollEngine.DLL

LoadedModule[81]=C:\WINDOWS\system32\XmlLite.dll

LoadedModule[82]=C:\WINDOWS\system32\DEVOBJ.dll

LoadedModule[83]=C:\Windows\System32\Windows.Devices.Sensors.dll

LoadedModule[84]=C:\Windows\System32\BiWinrt.dll

LoadedModule[85]=C:\Windows\System32\Windows.Graphics.dll

LoadedModule[86]=C:\Windows\System32\Windows.Devices.Enumeration.dll

LoadedModule[87]=C:\WINDOWS\System32\StructuredQuery.dll

LoadedModule[88]=C:\WINDOWS\System32\MSWB7.dll

LoadedModule[89]=C:\Windows\System32\DevDispItemProvider.dll

LoadedModule[90]=C:\Windows\System32\DDORes.dll

LoadedModule[91]=C:\Windows\System32\DefaultDeviceManager.dll

LoadedModule[92]=C:\WINDOWS\SYSTEM32\dxcore.dll

LoadedModule[93]=C:\WINDOWS\System32\imagehlp.dll

LoadedModule[94]=C:\WINDOWS\system32\rsaenh.dll

LoadedModule[95]=C:\WINDOWS\system32\CRYPTBASE.dll

LoadedModule[96]=C:\WINDOWS\System32\Shell32.dll

LoadedModule[97]=C:\WINDOWS\system32\DdcComImplementationsDesktop.dll

LoadedModule[98]=C:\Windows\System32\taskschd.dll

LoadedModule[99]=C:\Windows\System32\SspiCli.dll

LoadedModule[100]=C:\WINDOWS\system32\dbghelp.dll

LoadedModule[101]=C:\WINDOWS\system32\dbgcore.DLL

State[0].Key=Transport.DoneStage1

State[0].Value=1

OsInfo[0].Key=vermaj

OsInfo[0].Value=10

OsInfo[1].Key=vermin

OsInfo[1].Value=0

OsInfo[2].Key=verbld

OsInfo[2].Value=18362

OsInfo[3].Key=ubr

OsInfo[3].Value=175

OsInfo[4].Key=versp

OsInfo[4].Value=0

OsInfo[5].Key=arch

OsInfo[5].Value=9

OsInfo[6].Key=lcid

OsInfo[6].Value=1033

OsInfo[7].Key=geoid

OsInfo[7].Value=244

OsInfo[8].Key=sku

OsInfo[8].Value=101

OsInfo[9].Key=domain

OsInfo[9].Value=0

OsInfo[10].Key=prodsuite

OsInfo[10].Value=768

OsInfo[11].Key=ntprodtype

OsInfo[11].Value=1

OsInfo[12].Key=platid

OsInfo[12].Value=10

OsInfo[13].Key=sr

OsInfo[13].Value=0

OsInfo[14].Key=tmsi

OsInfo[14].Value=27077

OsInfo[15].Key=osinsty

OsInfo[15].Value=1

OsInfo[16].Key=iever

OsInfo[16].Value=11.175.18362.0-11.0.130

OsInfo[17].Key=portos

OsInfo[17].Value=0

OsInfo[18].Key=ram

OsInfo[18].Value=16319

OsInfo[19].Key=svolsz

OsInfo[19].Value=919

OsInfo[20].Key=wimbt

OsInfo[20].Value=0

OsInfo[21].Key=blddt

OsInfo[21].Value=190318

OsInfo[22].Key=bldtm

OsInfo[22].Value=1202

OsInfo[23].Key=bldbrch

OsInfo[23].Value=19h1_release

OsInfo[24].Key=bldchk

OsInfo[24].Value=0

OsInfo[25].Key=wpvermaj

OsInfo[25].Value=0

OsInfo[26].Key=wpvermin

OsInfo[26].Value=0

OsInfo[27].Key=wpbuildmaj

OsInfo[27].Value=0

OsInfo[28].Key=wpbuildmin

OsInfo[28].Value=0

OsInfo[29].Key=osver

OsInfo[29].Value=10.0.18362.175.amd64fre.19h1_release.190318-1202

OsInfo[30].Key=buildflightid

OsInfo[30].Value=2ABBFE8A-57A7-4ECE-870E-2008A39B7D9D.1

OsInfo[31].Key=edition

OsInfo[31].Value=Core

OsInfo[32].Key=ring

OsInfo[32].Value=Retail

OsInfo[33].Key=expid

OsInfo[33].Value=RS:362F

OsInfo[34].Key=containerid

OsInfo[35].Key=containertype

OsInfo[36].Key=edu

OsInfo[36].Value=0

FriendlyEventName=Stopped working

ConsentKey=APPCRASH

AppName=Host Process for Windows Tasks

AppPath=C:\WINDOWS\system32\taskhostw.exe

NsPartner=windows

NsGroup=windows8

ApplicationIdentity=BD8F58D832D9F05162A8A1E18B36CC06

MetadataHash=-1351433430

Below are links to my reports in the Feedback Hub concerning this problem. Plese go and upvote this problem so the MS engineers can see this and take action.

https://aka.ms/AA5iyv5

https://aka.ms/AA5i6y8

https://aka.ms/AA5iev4

Locked Question. This question was migrated from the Microsoft Support Community. You can vote on whether it's helpful, but you can't add comments or replies or follow the question.

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167 answers

Anonymous

2019-07-18T19:32:43+00:00

This might help, or just muddy the waters!

Setupcleanuptask is a scheduled task that runs every 5 days, or (I think) whenever Automatic Maintenance runs. Automatic maintenance runs as per the schedule in Control panel, Security and Maintenance. That's the 'old' control panel. If you run taskschd.msc (Win key + X then r then type in taskschd.msc) expand task scheduler library, expand Microsoft, expand Windows then scroll down to Setup. There u will find Setupcleanuptask.. On my system it is configured to run every 5 days. In the description it says Deletes previous Windows installation files a few days after installation. In the 'Actions' it says 'Custom Handler' so exactly what runs I don't know.

To me that means after a Windows feature update (say from 1809 to 1903) that creates a Windows.old as a backout it will delete Windows.old after a few days. Up until today everytime the task ran the Last run result was 0xC0000005 and Taskhostw failed with the same error (0xC0000005). I took that to mean the 2 events were connected. One caused the other.

I had 'cleaned' my Defender corruptions with DISM and SFC as has been described elsewhere. There were no DISM or SFC errors before I went to 1903 nor afterwards. I saw the DISM and SFC errors before I updated to 1903 build 239 on July 10th, corrected them, then updated without any (apparent) problem. I was having taskhostw errors before the upgrade to 239 and the .Net update (KB4506991). They both happened together on July 10th.

NOW …. today at 1341 Setupcleanuptask ran and completed with a last run result of 0x0. There was no associated taskhostw error. The task ran because Automatic maintenance ran it I think, although Automatic maintenance's run time is shown as 1 hour later - perhaps just a misinterpretation of time zones and daylight saving. The task was not scheduled to run again according to taskschd.msc until July 22nd. And taskschd.msc says it is still scheduled for July 22nd. I did nothing, as far as I am aware to cause it to run. I have changed nothing (apart from Windows Defender Definition updates) as far as I am aware. There is an almost empty Windows.old still on my harddrive.

Hello my friend,

I checked my task manager like you instructed and I found no Setup under Windows so therefore no Setupcleanuptask. I have run Disk Cleanup after the 10 days expired after installing 1903 and it cleaned out my Win.old folder.
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Anonymous

2019-07-18T19:11:16+00:00

about the laptop you set up yesterday: are you not forgetting that no one had that Host error until 10-13 days after update/installation of 1903?

And, just to add one thing - the ESENT error occurred within 12 hours prior to the first Host error being received on all the computers I know...

...no doubt someone will not have that error and prove the consistency wrong :).
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Anonymous

2019-07-18T19:08:46+00:00

about the laptop you set up yesterday: are you not forgetting that no one had that Host error until 10-13 days after update/installation of 1903?

But are you not forgetting that no one had the Windows error til the same time had passed, too :) :) ? A fair few of us had run scannow and got back zero problems.

Yet, the Windows error happened immediately after the upgrade, yesterday.

Honestly, Camilla, I don't think there's much logic to this problem - so why did I use logic :) ?!!!!

I think we're all baffled.

Lee
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Anonymous

2019-07-18T17:23:20+00:00

This might help, or just muddy the waters!

To me that means after a Windows feature update (say from 1809 to 1903) that creates a Windows.old as a backout it will delete Windows.old after a few days. Up until today everytime the task ran the Last run result was 0xC0000005 and Taskhostw failed with the same error (0xC0000005). I took that to mean the 2 events were connected. One caused the other.

NOW …. today at 1341 Setupcleanuptask ran and completed with a last run result of 0x0. There was no associated taskhostw error.

I checked my Setupcleanuptask as you directed me and I have no crash notification there. I also don't have any crash notification in EventID for the most recent one (today) or the one 5 days ago (which would be within the period of the Host errors - if they've stopped).

There have been a fair few people who have talked about deleting the old installation files as being the solution - but I don't see why that should be so as they're dormant and are just taking up disk space.

Unless the .dll has information in it that needs accessing for the program to complete the task.

I'm clutching at straws here - I think that, if we ever do find a solution, we probably won't know what it is :) !!!

Lee
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Anonymous

2019-07-18T17:17:52+00:00

about the laptop you set up yesterday: are you not forgetting that no one had that Host error until 10-13 days after update/installation of 1903?
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