If you need a font that looks exactly like (or very similar to) Arial but is free for commercial and personal use, you should download or Arimo .
Adobe Illustrator, CorelDraw, and AutoCAD often look for specific iterations of Arial (Not "Arial MT" or "Arial Unicode MS," but strictly "Arial Normal Western"). If your version is a later build, the software throws a "Missing Font" error. Arial Normal Western Panose Default Font Free LINK Download