: Run the following command, replacing with your actual file path: powershell
: Once the package is added, you can override the UI language using Microsoft Learn documentation guidelines: powershell Set-WinUILanguageOverride -Language ja-JP Use code with caution. Reboot : Restart the server to finalize the changes. Troubleshooting Common Issues Experts Exchangehttps://www.experts-exchange.com Solved: Language Packs on Windows 2016 - Experts Exchange
: Click the + (Add a language) button, search for Japanese , and select Add .
: Sign out and sign back in (or restart the server) to apply the new display language. Method 2: Manual Installation via Command Line (Offline)
: Go to Time & Language > Region & Language .
: Right-click the PowerShell icon and select Run as Administrator .
: Once "Japanese" appears in your list, click it and select Options . Click the Download button under "Download language pack".
: Click the Start button and select the gear icon for Settings .