Windows 7 Forums
Welcome to Windows 7 Forums. Our forum is dedicated to helping you find support and solutions for any problems regarding your Windows 7 PC be it Dell, HP, Acer, Asus or a custom build. We also provide an extensive Windows 7 tutorial section that covers a wide range of tips and tricks.

Windows 7: Win7 SP1 upgrade: ERROR_SXS_ASSEMBLY_MISSING (0x80073701)

16 May 2011   #1

Win7 Enterprise 64bit
Win7 SP1 upgrade: ERROR_SXS_ASSEMBLY_MISSING (0x80073701)


I have a Windows 7 Enterprise edition.
When upgrading to SP1 (online or standalone file) I receive error:


I ran the System Update Readiness Tool but it didn't find any problems.
Also sfc /scannow didn't report any errors.

In the CBS log I find these errors:

2011-05-12 13:23:26, Error CSI 0000000e (F) HRESULT_FROM_WIN32(ERROR_SXS_ASSEMBLY_MISSING) #8045# from Windows::ServicingAPI::CCSITransaction::ICSITransaction_PinDeployment(Flags = 0, a = Microsoft-Windows-Help-Customization-OEM-Deployment-LanguagePack, Version = 6.1.7600.16385, pA = PROCESSOR_ARCHITECTURE_AMD64 (9), Culture = [l:10{5}]"it-IT", VersionScope = 1 nonSxS, PublicKeyToken = {l:8 b:31bf3856ad364e35}, Type neutral, TypeName neutral, PublicKey neutral, cb = (null), s = (null), rid = [109]"Microsoft-Windows-Help-Customization-Package~31bf3856ad364e35~amd64~it-IT~6.1.7600.16385.OEMHelpCustomization", rah = (null), manpath = (null), catpath = (null), ed = 0, disp = 0)[gle=0x80073701]

I don't know why, but for some reason it wants something from an italian language pack:


- lkpsetup only shows my default english language, no other languages.
- under \windows\system32\catroot\{F750E6C3-38EE-85E5-00C0F4C295EE}\
I have these files:

This is the same for most of the other packages (no language, en-US and it-IT) in this directory.

How can I uninstall these it-IT packages ?


My System SpecsSystem Spec
17 May 2011   #2

Win7 Enterprise 64bit


Some more info:

Checking System Update Readiness.
Binary Version 6.1.7601.21645
Package Version 11.0
2011-05-17 15:10

Checking Windows Servicing Packages

Checking Package Manifests and Catalogs

Checking Package Watchlist

Checking Component Watchlist

Checking Packages

Checking Component Store

Seconds executed: 681
 No errors detected
sfc /scannow

Beginning system scan.  This process will take some time.

Beginning verification phase of system scan.
Verification 100% complete.

Windows Resource Protection did not find any integrity violations.
dism /online /get-features | more
Deployment Image Servicing and Management tool
Version: 6.1.7600.16385

Image Version: 6.1.7600.16385

Features listing for package : Microsoft-Windows-Foundation-Package~31bf3856ad364e35~amd64~~6.1.7600.16385

Feature Name : OEMHelpCustomization
State : Enabled

Feature Name : CorporationHelpCustomization
State : Disabled
When I try to disable the OEMHelpCustomization package it stops at 17,9%

dism /online /disable-feature /featureName:OEMHelpCustomization

Deployment Image Servicing and Management tool
Version: 6.1.7600.16385

Image Version: 6.1.7600.16385

Disabling feature(s)
[==========                 17.9%                          ]

Error: 14081

The referenced assembly could not be found.

The DISM log file can be found at C:\windows\Logs\DISM\dism.log

There are alot of it-IT packages in the \Windows\servicing\Packages directory.
I suppose it's not only the Windows-Foundation-Package the SP1 upgrade fails on, just the first package it encounters.

On all the other sites I read about this problem, they suggest to do an in-place repair or uninstall all updates.

Anybody else got some other ideas ?

Best regards,
My System SpecsSystem Spec
18 May 2011   #3

Win7 Enterprise 64bit


After 2 days of searching I was finally able to install SP1.
First, this was a W7 Professional not Enterprise like I mentionned above.

The solution that worked for me:
- install vistalizator (Vistalizator - change display language in Windows Vista and Windows 7) and add the italian language pack
- I ran the SP1 upgrade, got the same error.
- copy the cbs.log under windows\logs\ to a different location
- scroll down to the bottom of the file and search for errors.
- in my case it gave an error for Package_51_for_KB976098~31bf3856ad364e35~amd64~~
- uninstall update KB976098 and run SP1 upgrade again

You will have to do the last step several times untill all errors are gone.
In my case I also had to uninstall KB979306.
After the SP1 upgrade you can uninstall the language with vistalizator or lpksetup.

Hope this helps other people that encounter this error.

My System SpecsSystem Spec

18 May 2011   #4

Windows 7 Ultimate SP1 64-Bit

Hello Kris, welcome to Windows Seven Forums.

Sorry we didn't help you, but pleased to hear you were able to resolve the problem.

Thanks for posting to let us know, it may be of help to someone in the future.
My System SpecsSystem Spec

 Win7 SP1 upgrade: ERROR_SXS_ASSEMBLY_MISSING (0x80073701)

Thread Tools

Similar help and support threads
Thread Forum
Unable to uninstall windows update KB2670838, error 0x80073701
Hello, I play a lot of PC games, and in one particular game, I have been having a graphical glitch. This is apparently related to the Windows KB2670838 update, and many people on various forums have solved the problem by removing this update. I first tried removing the update from 'Programs and...
Windows Updates & Activation
IE10 Update gets Error 9C95 and 0x80073701 - ERROR_SXS_ASSEMBLY_MISSIN
Hello, first I have already followed this post: ================================= Checking System Update Readiness. Binary Version 6.1.7601.21645 Package Version 18.0 2013-04-20 13:05
Windows Updates & Activation
Dreaded "error_sxs_assembly_missing(0x80073701)". Next move?
Tried to install SP1 on my wife's Asus laptop, SP1 download wouldn't install. Ordered a CD, wouldn't install either. Got the above shown message. Reviewed the CBS log and found the following error messages: 2012-09-04 20:50:43, Info CBS Failed to resolve item in Package:...
Windows Updates & Activation
dual boot win7 & winxp separate drives OR upgrade to win7 professional
I've researched for awhile now & can't seem to find which is the best way to add winxp functionality to my laptop. I have office xp professional, painter7 & photopaint8 software that worked fine on winxp 32 bit thru sp3. New laptop is win7 home premium 64bit. Two 500gb hard drives. Which is...
Upgrade Win7 starter using win7 upgrade software for Vista?
I have 2 netbooks with windows7 starter edition on them, I reently purchased an upgrade family pack from Ebay and mistakenly didn't releaze it was software to upgrade from Windows Vista to Windows7 Home Premium edition. Before I break the seal, I was wondering if this would work, can I use this...
Installation & Setup
Win7 Pro 64bit Upgrade Key w/ Prem 32bit Upgrade Disk
To avoid the Student Win 7 hassle (upgrading Vista 32 to Win 7 Pro 64 bit ISO burn, etc), can I simply use the Home Prem 32 Upgrade (for my other computer) arriving this afternoon with my 64bit Pro upgrade key & end up with the 64bit Pro installation? Thanks.
Installation & Setup

Our Sites

Site Links

About Us

Find Us

Windows 7 Forums is an independent web site and has not been authorized, sponsored, or otherwise approved by Microsoft Corporation. "Windows 7" and related materials are trademarks of Microsoft Corp.

Designer Media Ltd

All times are GMT -5. The time now is 23:30.
Twitter Facebook Google+ Seven Forums iOS App Seven Forums Android App