If Japanese was not in the drop-down list, please follow these instructions: Restart PC so that the update takes effect. Click the Change system locale… button in the Administrative tab (rightmost tab).Click on Clock, Language, and Region, then on Regional and Language Options.( OPTION 3 ) How can I set Windows 7 to Japan/Japanese? On the Language window, click on the Options button to download and install the Japanese language pack.Find and click on Japanese in the list.Click on Add a Language on the Language window.Click on Add a Language under Clock, Language, and Region.Press the Windows key, type ‘control panel’ and open the Control Panel.
For Windows 8.1 and earlier versions of Windows 10:
