How to set Language Support for non Unicode Program in Windows 10

 

Open Start menu or press windows button. Type Language and open.

Language setting window will appear, now press on Location

Region setting window will appear, go to Administrative tab and click on Change system locate button.

New window will appear with current system locate setting.

From drop down select the language which is not appearing properly in programs like outlook, for me it is Arabic. After selecting the language windows will ask for restart. click "Restart now" button.

check the issue.