(Replace D:\langpacks\fr-fr.cab with your actual file path.)

A language pack in Windows 10 is a collection of files that contain translations of Windows features, apps, and settings into a specific language. Installing a language pack allows you to change the display language of your Windows 10 device, making it easier to navigate and use for users who prefer a language other than the default one.

Online language pack installation via Windows Update is convenient if you have a stable, high-speed connection. However, for IT administrators managing hundreds of offline machines, users in remote areas, or those building custom deployment images (WIM files), an offline installer is the only professional solution.