If the language you want is missing from the Preferences dropdown, you may need to install a language pack manually. This is common in enterprise environments where IT administrators install "English-only" versions to save space.
For Windows Users: Adobe does not host a simple "Language Pack" download page for general users. Instead, you must reinstall the Reader using the full offline installer which includes all languages.
For macOS Users: Mac users generally have a universal binary that includes all supported languages. If the language is missing:
Once you have mastered the basics, use these advanced strategies to leverage your language pack like a pro.
There are two common routes: