[SOLVED] LTSC 2021 0x80073701 since April

[oedipus]

I got a system that runs Windows 10 LTSC 2021, which can't apply cumulative updates since April (KB5055518).
The updates all fail with the same code: 0x80073701.
SFC scannow and DISM restorehealth show no errors at all, which confuses me even more.
SSU updates that are contained within the cumulative update packages seem to be installing successfully.

I attached multiple logs:
CBS-DISM = cbs log after running dism restorehealth
CBS-KB5061979 = cbs log after running KB5061979
CBS-SFC = cbs log after running sfc scannow
dism-KB5061979 = dism log after running add-package on KB5061979 manually
dism-restorehealth = dism log after running dism restorehealth
and lastly of course: ComponentsScanner

Thanks alot for whomever might save me of this trouble!

 

[Windows Update Bot]

Hi @oedipus,

Welcome to Sysnative Forums!

If you haven't already, please review the posting instructions here, and attach the requested log files. Without log files, our helpers will not be able to assist, and this will slow down fixing your machine.

If logs have been already been provided, our team of volunteers will analyse the provided log files to build a fix for your system. Please be aware that this may take several days from your initial post, due to the high volume of threads that we receive.


- Sysnative Windows Update Team

 

[oedipus]

Apparently the problem was the current language pack (en-us)
I sifted through the CBS log and found this entry: c_holographic.inf-LanguagePack mentioned.
I tried to install and uninstall Analog.Holographic.Desktop~~~~0.0.1.0 in the hopes of resolving the issue but that didn't help.
So I installed a new language and changed the system language to it. Removed en-us and voila, I was able to install the current cumulative update.
Afterwards I installed en-us again and removed the previous language pack.
Installing the newest preview cumulative update worked without issues

Beware: I had this on multiple systems and some of them would boot loop after switching or uninstalling the language pack. after each component store change, perform cleanup or you have to boot WinRE or something else and perform dism /image:C:\ /cleanup-image /revertpendingactions