Windows 10 Pro error ERROR_SXS_ASSEMBLY_MISSING installing hyper-v

[slim_blackhole]

Hello,

Have been struggling with this one for a while. I have Windows 10 Pro build 1803 with all updates. I'm trying to install hyper-v optional feature (I've tried all different ways, but this gives most info) using DISM:

PS C:\Windows\system32> DISM /Online /Enable-Feature /All /FeatureName:Microsoft-Hyper-V /All

Deployment Image Servicing and Management tool
Version: 10.0.17134.1

Image Version: 10.0.17134.885

Enabling feature(s)
...

[==========================100.0%==========================]

Error: 14081

The referenced assembly could not be found.

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

The relevant line from CBS.log (full file attached) is:

2019-07-20 13:46:52, Error                 CSI    00000009 (F) STATUS_SXS_ASSEMBLY_MISSING #53806# from CCSDirectTransaction::OperateEnding at index 0 of 1 operations, disposition 2[gle=0xd015000c]
2019-07-20 13:46:52, Error                 CSI    0000000a (F) HRESULT_FROM_WIN32(ERROR_SXS_ASSEMBLY_MISSING) #53648# from Windows::ServicingAPI::CCSITransaction::ICSITransaction_PinDeployment(Flags = 0, a = HyperV-UX-PowerShell-Module-HyperV-vm-Deployment-LanguagePack, version 10.0.17134.1, arch amd64, culture [l:5]'nl-NL', nonSxS, pkt {l:8 b:31bf3856ad364e35}, cb = (null), s = (null), rid = 'HyperV-UX-PowerShell-Module-HyperV-vm-Package~31bf3856ad364e35~amd64~nl-NL~10.0.17134.1.882ec3c0a4ad38131b14954a45d63426', rah = (null), manpath = (null), catpath = (null), ed = 0, disp = 0)[gle=0x80073701]

I've noticed that it's trying to install the languagepack for nl-NL which isn't available in winSxS

Things I've tried:

Dism.exe /online /Cleanup-Image /StartComponentCleanup
sfc /scannow
Dism /Online /Cleanup-Image /RestoreHealth
sfc /scannow

No corruptions are found.

I've also tried installing the nl-NL languagepack through Windows languages.

Some relevant seeming pages that are close but not right (other languages say)
add roles and features fails with error code 0x80073701 at Windows Server 2016 Standard Build 14393
HRESULT = 0x80073701 - ERROR_SXS_ASSEMBLY_MISSING Windows 2012 Essentials
Can't enable Hyper-V on Windows 10 Education

Any help would be greatly appreciated!

 

[slim_blackhole]

Well I think I resolved this one myself, based on suggestions from :
server 2016 unable to add roles or features after making server a domain control

With the additional information that:
1. I had to take ownership of the registry key [HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Component Based Servicing\PackageDetect] as well as give myself full permissions ( to be able to delete ). I then exported the whole key, deleted the whole key, used a regex delete to remove all `nl-NL` lines, then imported back in.

Once I had done this, the package installed without problem.

 

[Sysnative Windows Update]

Thanks for sharing your solution. Glad you got it fixed!