you need to maintain legacy document compatibility.
Avoid the "free download" traps. If you are trying to read old documents, use an online Font Converter to switch the text to Unicode. If you are designing something new, consider using modern, free, Unicode-compliant fonts like Noto Sans Gujarati or Lohit Gujarati . They look professional, are universally readable, and are
Open the Control Panel Fonts folder (C:\Windows\Fonts) and paste the files there.