Why is my PowerPoint presentation not displaying the correct font style for inserted symbols?

1. Verify installed font is available on both Microsoft Office and PowerPoint
2. Ensure the font is compatible with the version of Microsoft Office and PowerPoint
3. If applicable, enable 'font embedding' within PowerPoint if not already enabled
4. In PowerPoint and other Office applications, set 'Compare and merge documents' to 'Don't Embed common fonts'
5. Ensure the font is supported and enabled in application system preferences
6. Re-install the font if necessary