I have some source files that have comments written in Japanese. When I open these files in Visual Studio they appear like this:
à–¾FNCAP‰¹—p‚̃XƒŒƒbƒh
i have just gotten this problem and fixed it by changing config "files.encoding" in file "setting.json" . Go to Menu => File => Reference => setting to open the file. Search for "files.encoding" and change value to Encoding of your file (my file encoded in Shift-JIS , i checked ending by using Notpad++)