Microsoft in their infinite wisdom appear to have changed their approach to multi-lingual support in Windows 10. Whereas a normal user can install language packs via the language settings, this breaks Sysprep, as the user context appears to be used for the appx packages and not provisioning for the system. In 1809 and previous, we'd download the Language Pack ISO from Volume Licensing and use DISM to install the languages, but Microsoft has neglected to release this so far neither can I see any comms about when it might be out.
Can anyone provide any information on the method of injecting languages in 1903 for gold image deployment across multiple countries? Hopefully, they documented this somewhere and I've yet to find it...
Additionally, we have SCCM, so this is another option for an answer if you only have a solution via that.