The Servicing Stack is the component or set of modules that install Windows updates. Additionally, it contains the component-based servicing stack (CBS), which is a key underlying component for several elements of Windows deployment, such as:
- DISM
- SFC
- Changing Windows features or roles
- Repairing components
Microsoft releases Servicing Stack Updates (SSU) which provide fixes to the servicing stack. Servicing stack updates improve the reliability of the update process to mitigate potential issues while installing the latest quality updates and feature updates. If you don’t install the latest servicing stack update, there’s a risk that your device can’t be updated with the latest Microsoft security fixes.
If the servicing stack is corrupt, servicing the computer is not possible; DISM/SFC won’t work, and you’ll be unable to add or remove Windows Features. Also, a repair installation using the Media Creation Tool or the ISO may fail if the servicing stack is corrupt.
EXAMPLE – Servicing Stack issue: Errors 0x800703e6 (998) in DISM and Windows Update
Windows Servicing Stack Diagnostics script
Here’s the Windows Servicing Stack Diagnostics script I wrote, which queries the servicing stack version installed on the computer and checks the hash checksum (SHA256) of the servicing stack modules.
How to Download Run the script?
Right-click on the link SSUDiag.vbs, and click “Save link as” or equivalent option in your browser. If your browser saves it as SSUDiag.vbs.txt, rename the file to SSUDiag.vbs. Double-click SSUDiag.vbs to run the script.
The script produces the following log file in the %temp% folder:
- ssudiag.txt – Contains the list of servicing stack modules, their version, and hash.
Note: If an expert is assisting you in fixing the CBS errors, please upload the above logs to a cloud account (e.g., OneDrive, Dropbox, etc.) and share the link to him.
Script contents
Here is a sample SSUDiag.txt log file
SERVICING STACK DIAGNOSTICS
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Stack Version: 10.0.22621.1626
Stack Path: C:\Windows\winsxs\amd64_microsoft-windows-servicingstack_31bf3856ad364e35_10.0.22621.1626_none_e930f5a242f053dd
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Modules in [C:\Windows\winsxs\amd64_microsoft-windows-servicingstack_31bf3856ad364e35_10.0.22621.1626_none_e930f5a242f053dd] (22 Files)
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Filename Modified Version Size (bytes)
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amd64_installed 07/05/2022 06:19:46 9
CbsCore.dll 28/03/2023 07:11:55 10.0.22621.1626 2,946,392
CbsMsg.dll 28/03/2023 07:11:55 70,992
dpx.dll 28/03/2023 07:11:54 10.0.22621.1626 779,592
drupdate.dll 28/03/2023 07:11:55 10.0.22621.1626 435,544
drvstore.dll 28/03/2023 07:11:53 1,459,984
GlobalInstallOrder.xml 07/05/2022 06:19:46 1,247,506
msdelta.dll 28/03/2023 07:11:57 5.0.1.1 603,464
mspatcha.dll 28/03/2023 07:11:51 79,232
poqexec.exe 28/03/2023 07:11:55 10.0.22621.1626 569,344
ReserveManager.dll 28/03/2023 07:11:55 10.0.22621.1626 329,032
smiengine.dll 28/03/2023 07:11:58 984,448
smipi.dll 28/03/2023 07:11:58 62,848
TiFileFetcher.exe 28/03/2023 07:11:59 550,272
TiWorker.exe 28/03/2023 07:11:58 10.0.22621.1626 292,224
turbocontainer.dll 28/03/2023 07:11:52 10.0.22621.1626 525,696
turbostack.dll 28/03/2023 07:11:52 10.0.22621.1626 1,520,976
updateagent.dll 28/03/2023 07:11:58 3,425,648
WcmTypes.xsd 07/05/2022 06:19:46 1,047
wcp.dll 28/03/2023 07:11:53 10.0.22621.1626 3,978,608
wdscore.dll 28/03/2023 07:11:53 10.0.22621.1626 283,992
wrpint.dll 28/03/2023 07:11:55 148,864
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File Hash [SHA256] - C:\Windows\winsxs\amd64_microsoft-windows-servicingstack_31bf3856ad364e35_10.0.22621.1626_none_e930f5a242f053dd
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amd64_installed 18453C9F6DDC38C86A803D08A609256A44AAC57EF6C1E7B75AEA93B50BA465A8
CbsCore.dll B1E1F2E4638993E8B453A664FAAC53F57E35437AF5FF879603F4B961C2F55C87
CbsMsg.dll 5BB9B9802431BE9597E6341B76C50461F68DA82A5730F1677B3EF405314A4AFE
dpx.dll 2AFCA26449F32A98D5E2B7D4370725AAC3DE8ACDCD07EB26631CFB38ABB4D6D4
drupdate.dll 37F1908284610903530B441ACBACE00F5725FF11FE2AFEF96B2CEBA2080E38DA
drvstore.dll B470A84AE3E0FEDD18D28E1F58756BEEBD427BBCD6B8FA6FD26E1675D31EB013
GlobalInstallOrder.xml 0788FF5BFF894B7CBA16DF2057AF97BC2FC6B1C1D5136FCCF6231CFA73755EC1
msdelta.dll 05875B7F81A162D5E789AAE4042CED13A1DAC498FEDC0B0280A39EFCAD7828E5
mspatcha.dll 95DFC67A7DE74C35179B606B4CE44B25E290DD18738B153FCE292C9BA8001838
poqexec.exe E0E8D02F76970292B9B266D7B18B6AD302722B6D1FDF86254CB466AB8BE9539A
ReserveManager.dll E522083AA91349BE734E2AAC11796A61CD3C102ECDB8670C0C5E5734ED70B76B
smiengine.dll 21327F94FC7015AB57EB1CCDD83E663FAF917DCE4D4ED506794C4039D6C518B3
smipi.dll 5501D3E567A4E5CDED66FEE41F0F3A8E212BBD3B39A2B64742E5BD6D81531207
TiFileFetcher.exe 62289E3256F5AEC09BC14941ED01625F32201C7C21C281B6DE8E9B5205213747
TiWorker.exe C869F060EE84893F1C56B528A10CA65527121CA3BB0B63EE8FD35DDF60A19118
turbocontainer.dll 30B95493447C0B3171C0284BD567A5F37670C6BF8D224D94EA63E9D76886F59B
turbostack.dll 510A9DC8AEEC2B576A6908F3DF9F424FAFC43158935D7B5079829FF03488F84D
updateagent.dll 4A1CE220A3148F28702806D84123034C5DC9430F68A7FA9559D93A9824D17353
WcmTypes.xsd CD701B2BDD71894D2613DECBEE016446F8261D6CBB51493EEFF372530B00E1F1
wcp.dll 2F13805CEB30AA8B0508BEAF167D59935D46F1C3A82B56E440E965AA58B8A9EB
wdscore.dll 6C45FFEE70CCBAFA53FC8F9B674C44C9BAE2782705433E3EFA3F1ED3241D89EC
wrpint.dll 083DA819CCBF6258956F6EBC224106B16F3B06932D1F80870EB47A579AD5DE5D
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Modules in [C:\Windows\Servicing] (4 Files)
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Filename Modified Version Size (bytes)
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CbsApi.dll 07/05/2022 06:19:46 10.0.22621.1 79,200
CbsMsg.dll 07/05/2022 06:19:46 10.0.22621.1 71,000
TrustedInstaller.exe 07/05/2022 06:19:46 10.0.22621.1 218,456
wrpintapi.dll 07/05/2022 06:19:39 10.0.22621.1 32,768
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File Hash [SHA256] - C:\Windows\Servicing
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CbsApi.dll BFD4BF859785C8B4B0AFAAEB7244E32C82899D7836729A580F2BE072BCCC5C5F
CbsMsg.dll 4F589D30AB12F6D9939A9951BCBCE2CB632DE7F6AF51F6D8B4C5D8EFBE859155
TrustedInstaller.exe A7046DD1900DAE0C6605493DFC61F3C5248E1901325F8427C8093B7B598DF6B0
wrpintapi.dll 7B955C3D5863D50D2EF804CD6D57A6FE69FDCCF8E0EC181398225B5F439F2FAD
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Modules in [C:\Windows\System32\Dism] (28 Files)
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Filename Modified Version Size (bytes)
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AppxProvider.dll 07/05/2022 06:19:37 10.0.22621.1 693,608
AssocProvider.dll 07/05/2022 06:19:37 10.0.22621.1 140,624
CbmrProvider.dll 07/05/2022 06:19:37 10.0.22621.1 390,480
CbsProvider.dll 04/01/2023 21:11:44 10.0.22621.608 1,099,112
DismCore.dll 07/05/2022 06:19:46 10.0.22621.1 480,616
DismCorePS.dll 07/05/2022 06:19:46 10.0.22621.1 210,272
DismHost.exe 07/05/2022 06:19:46 10.0.22621.1 177,512
DismProv.dll 07/05/2022 06:19:46 10.0.22621.1 304,464
DmiProvider.dll 04/01/2023 21:11:44 10.0.22621.608 451,920
EdgeProvider.dll 07/05/2022 06:19:37 10.0.22621.1 210,264
FfuProvider.dll 11/03/2023 18:54:44 10.0.22621.1344 700,416
FolderProvider.dll 07/05/2022 06:19:46 10.0.22621.1 95,576
GenericProvider.dll 04/01/2023 21:11:44 10.0.22621.608 181,616
IBSProvider.dll 07/05/2022 06:19:37 10.0.22621.1 91,480
ImagingProvider.dll 07/05/2022 06:19:46 10.0.22621.1 255,336
IntlProvider.dll 04/01/2023 21:11:44 10.0.22621.608 333,152
LogProvider.dll 07/05/2022 06:19:46 10.0.22621.1 116,048
MsiProvider.dll 07/05/2022 06:19:37 10.0.22621.1 214,368
OfflineSetupProvider.dll 04/01/2023 21:11:44 10.0.22621.608 218,448
OSProvider.dll 04/01/2023 21:11:44 10.0.22621.608 185,680
ProvProvider.dll 04/01/2023 21:11:44 10.0.22621.608 832,848
SetupPlatformProvider.dll 07/05/2022 06:19:37 10.0.22621.1 197,968
SmiProvider.dll 04/01/2023 21:11:44 10.0.22621.608 312,656
SysprepProvider.dll 07/05/2022 06:19:37 10.0.22621.1 841,040
TransmogProvider.dll 07/05/2022 06:19:34 10.0.22621.1 1,389,912
UnattendProvider.dll 04/01/2023 21:11:44 10.0.22621.608 267,616
VhdProvider.dll 11/03/2023 18:54:44 10.0.22621.1344 614,488
WimProvider.dll 07/05/2022 06:19:46 10.0.22621.1 689,488
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File Hash [SHA256] - C:\Windows\System32\Dism
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AppxProvider.dll 164834DE02F7E1F8F152D466B24D63E78D70DA458700969A1305E0DF7FB0EA6B
AssocProvider.dll 1C0232B85C69FBD72BBCBDAF6E9331BE8DAB7DED1E68BDC1AD9C8B6622884C50
CbmrProvider.dll 736E2A4D96F774EE72707864057E5D33B68DF0FA6F62BC0936B9C75445633ADD
CbsProvider.dll 265F88DD4B04E729F8EDA08A0F4A5847C24F2B7CB5FD038C8DCB1555823A4E57
DismCore.dll 6D9445AD2BB596686F939DC0C89171B1EA21E6CC84A3EA13851FC1AD7094D3BD
DismCorePS.dll 5B0F41460325C4539417473313805FA63224C8F45C8F4AAEBA1CB06B37CCC243
DismHost.exe 7E48FDDCA1227FC511CEFA2EE473DC9C7887270C1BB0ECDDC4A56F01B6C490E4
DismProv.dll D738CA24CE031A134AE23E3C6ACAA250ED5D26C3E3EF361A779EFB91A67361AB
DmiProvider.dll B20A63A47D3936047CEED3292D05F344290B492EE068964665291F1555E7A45B
EdgeProvider.dll B6AA7FC3B3A08CC38D90B609D9514BECD6E255E24D1C9C2E973F83A03F973411
FfuProvider.dll 679A444C06D7CB6B7ABE58341CFCC802D12B53D0556864DDBD9D93C9608ABBCD
FolderProvider.dll 34A4C98301BA0F4FB4365A75450E8AE8FDFF9D983A8D541E6F40CC7BA3401143
GenericProvider.dll D8F9A3CB876AF7A2476568161FDA128537D0D4D042055F2CBBDE3EA0CB71AA53
IBSProvider.dll 294553DFC09C62D0C5263BD7A912543501A3079437AD4E9D99C99E01FFE9D987
ImagingProvider.dll 75FF2CD4602FD14ABF64EA3CCE4C55DE902AC30AB28B008A333D368FCB9E6DBE
IntlProvider.dll 2F1FE0F6F5935DCDE5309D14A53065E27939B8D62E3A6995E2535BA5DEB7433C
LogProvider.dll 400A3BC19FBD123A600C4B5936BF3A99848DD697D28C1FEFCD39D2642B9C1003
MsiProvider.dll D4A00E34E3DFE3BC27CB863503C257B2228BB34747547DEC5870541AC49288F9
OfflineSetupProvider.dll 0A89B238B524E20518D4BAC85B49A21DE90C8E8EC23AE411B7E65064156A18E3
OSProvider.dll A825AE862FD80363B3685E94D01A4CD003E8B9BA7C1E5E727997005552EC5ADD
ProvProvider.dll 370F714362A5156DEF06F5BFAC00E628157C1EE193048BEC72997EACEEFA352F
SetupPlatformProvider.dll A5760B07D4C589029C6E7C0CC2DD8EB318F1D752CB506738259822F2ED308BA7
SmiProvider.dll F0922141C78F623E9894C22D02CD00A94289AEEC2AE8DBB447266B17A3DF7D6E
SysprepProvider.dll 768334B1F4677D2652F2EACFDC6DE32B84A81BD93B3CC3CC6CAD44F125AFA0D3
TransmogProvider.dll D2218D3EE75279B19EB493D6C90ADCBCB43BE1F30CF121A5A201B43BE4CAE07E
UnattendProvider.dll 750D06C9823A09F730F4376890550DA9A12E22558C7A4B8AF887892C51198598
VhdProvider.dll BE6B511F0D1B84D2092F36C9BBFACD57DEC971A2189E7CD9CC9E1BFDDFDC1B3F
WimProvider.dll 2B38B2C0BFB977BB95CE61185D8F402D694F49F81660303E55A9EE6DFC65C03B
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REGISTRY: No IFEO Overrides present for core servicing files. Good!
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Microsoft Windows [Version 10.0.22621.1555]
HotFixID InstalledOn
KB5012170 1/11/2023
KB5022497 2/16/2023
KB5025239 4/15/2023
KB5025749 4/15/2023
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LOADED MODULES (Before starting DISM SCANHEALTH) at 27/05/2023 16:14:30
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See [%TEMP%\modules1.txt]
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LOADED MODULES (During DISM SCANHEALTH) at 27/05/2023 16:14:42
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See [%TEMP%\modules2.txt]
--------------------------------------------------------------END OF LOG--------------------------------------------------------------
In the above log, version information for some DLLs (in table 1) isn’t displayed. It’s highly likely that those DLLs are corrupt and need to be replaced. You can source those files from the respective ISO, MSU, or another system running the same OS Build. The log also tells you if there are any Image File Execution Options entries that block the servicing stack executables from starting correctly.
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