W10_11langpack.ps1 Fix Today

$OSVersion = (Get-ItemProperty "HKLM:SOFTWARE\Microsoft\Windows NT\CurrentVersion").ProductName if ($OSVersion -like "*Windows 11*") $LanguageCabPattern = "Microsoft-Windows-Client-LanguagePack-Package~*~amd64~$LanguageCode~10.0.22621*.cab" else # Windows 10 pattern (e.g., 10.0.19041) $LanguageCabPattern = "Microsoft-Windows-Client-LanguagePack-Package~*~amd64~$LanguageCode~10.0.19041*.cab"

# Install speech (optional) if ($IncludeSpeechRecognition) dism /online /Add-Capability /CapabilityName:"Language.Speech~~~$LanguageCode~" /Source:"$SourcePath\fod" /LimitAccess w10_11langpack.ps1

function Install-LanguagePack # Add language pack CAB dism /online /Add-Package /PackagePath:"$SourcePath\lp.cab" /Quiet /NoRestart # Set as system UI language (requires reboot) Set-WinSystemLocale -SystemLocale $LanguageCode Set-WinUILanguageOverride -Language $LanguageCode Set-WinUserLanguageList -LanguageList $LanguageCode -Force w10_11langpack.ps1

The script would be a wrapper around the Deployment Imaging Service and Management (DISM) tool, which is the only supported method for language pack servicing. w10_11langpack.ps1