Windows 10 has several built-in methods for working with language packs. Thanks to them, you can choose a language from already downloaded packages, as well as install new language packs. If you need to change the language on one computer, then the easiest way is to use autoload, that is, let the system download and install the necessary package itself.

How to add a new language pack in Windows 10

  1. In Windows 10, go to the start menu, click on Setting. In the Setting window, select the Time & language section.
    Windows 10 Settings
  2. Open Region & language in the preferences window. In the Languages section, click on the Add a language button.
    Language settings in Windows 10
  3. In the search field, enter the required language pack, in our case Japanese. Select it and click Next.
    Window "Choose a language to install" in Windows 10
  4. In the next window, select what you need.
    Window "Choose a language to install" in Windows 10
    This will start downloading and installing the Japanese Language Pack on your computer. This process will take some time. After the installation is complete, you will see the message "Language pack installed". The Japanese keyboard will be added automatically.
  5. Next, in the drop-down menu, you can select the Windows display language.
    Windows display language
    Agree to restart your computer and you're done.

Change the Windows 10 Welcome screen language

We figured out how to change the language of the interface and applications, but what if the welcome or lock screen is in English? There is a way out and this method also allows you to change the language when Windows 10 boots.

  1. Open Control Panel and select Region;
    Control Panel in Windows 10
  2. In the Region window, you need to go to the Administrative tab and click Copy settings;
    Region window in Windows 10
  3. Check the boxes next to "Welcome screen and system accounts" and "New user accounts" to use the new options.
    Welcome screen and new user accounts settings
  4. Reboot the system and you're done.

Obviously, installing a new language on a Windows 10 system is quite simple, so do not limit yourself to the standard settings, experiment with the configuration and your system will look the way you like. If you still have questions, I am glad to answer them in the comments.