You can change Cortana's language on Windows to any one of the Cortana supported languages like German, Italian, Spanish, Simplified Chinese, French, English, etc, by following this tutorial.

Once you add another language to Windows 10 or Windows 11, the menus, title bars, and other elements of the operating system will change to display that language.

Need to change your keyboard language in Windows 10 or 11? We’ve put together this guide to teach you how.

The Time & language tab in the new Windows 10 Settings menu is pretty straightforward. This is where you go to change the time and date, add languages (read: keyboards) to your PC, and adjust the ...

Once you add another language to Windows 10 or Windows 11, the menus, title bars, and other elements of the operating system will change to display that language.

Learn how to change Language in Windows 11/10 & also how to change the Display Language for new user accounts, with Reserved Accounts.