Language

Get-InstalledLanguage

## Language Language Packs  Language Features
## -------- --------------  -----------------
## en-US    LpCab           BasicTyping, Handwriting, Speech, TextToSpeech, OCR
## ja-JP    LpCab, LXP      BasicTyping, Handwriting, Speech, TextToSpeech, OCR

• LpCab: Core Windows Language Pack in Cab
• LXP: Store/AppX-based Local Language Experience Pack

## Install Language Pack
$targetLanguage = "en-US"
Install-Language -Language $targetLanguage

## Apply Changes
#Set-WinUserLanguageList $targetLanguage -Force
#Copy-UserInternationalSettingsToSystem -WelcomeScreen $True
#Restart-Computer -Force

https://learn.microsoft.com/powershell/module/languagepackmanagement/get-installedlanguage
https://www.reddit.com/r/sysadmin/comments/1jk6i18/