Language Packs
Download and integrate Windows language packs from Features on Demand ISOs.
Language packs enable multilingual Windows installations. This guide covers downloading language pack CAB files and integrating them into images with NTLite.
Obtain Language Packs
Language packs are distributed as CAB files within Features on Demand (FOD) ISOs. A community-maintained list of direct download links for each Windows version is kept on the forum: Language Packs thread.
Other sources:
- Microsoft Volume Licensing Service Center (VLSC)
- Visual Studio Subscriptions (formerly MSDN)
- OEM language pack download pages
Version matching: Language packs must match your Windows version and build number. Mismatched versions will fail during integration.
Integrate Language Packs
Once you have the FOD ISO with language packs:
- Load your Windows image in NTLite
- Navigate to the Updates page
- Click Add → File
- Select the appropriate language pack CAB file for your Windows version
- Go to Apply → Process
The language pack will be integrated into the image. Users can switch display language via Windows Settings after installation.
Multi-Edition and Multi-Language Images
Adding several languages to a multi-edition ISO does not multiply the wait. NTLite services each edition in parallel, in its own DISM process, so all editions finish in roughly the time one would take. The scaling is automatic - it adapts to the CPU and leaves a little headroom so the machine stays usable, for example servicing three editions at once on a 4-thread CPU.
Give it room to work: every edition is mounted separately, so free disk space is usually the limit you hit first. Queue order inside a single apply is handled for you - language packages are integrated ahead of the updates that service them.
Keep a Language Baseline for Monthly Rebuilds
Language packs change rarely, cumulative updates change every month. Redoing the language work on every refresh wastes the slowest part of the build, so integrate the languages once and keep that result as a reusable baseline:
- Integrate the language packages, apply, and name the result clearly
- Right-click the image on the Image page and choose New edit - the language-pack image becomes your read-only reference, and the new edit is the working copy you build in
- Each month, right-click the edit and choose Revert to drop back to language-packs-only, then apply your preset with the latest updates
Because Revert only mirrors the differences from the reference, getting back to a clean language baseline is quick - and rebuilding this way is faster than assembling a fresh multi-language image from UUP each month. The edit and reference mechanics are covered in the Image Management guide.
Set Default Language
To set a non-English default language for unattended installation:
- Go to the Unattended page
- Find the Regional Settings section
- Set UI Language to your desired language code
- Optionally configure keyboard layout and locale settings to match
Common Language Codes
Troubleshooting
- If integration fails, verify the version and build match between Windows image and FOD ISO
- FOD ISOs are architecture-specific (x64, x86, ARM64) - use the correct one
- Setup language is automatically included when integrating a language pack