You need to find where Far Cry 4 is installed on your computer. Default paths usually look like this:
If your game crashes immediately after adding the English pack, the files you downloaded likely do not match your current game version patch (e.g., trying to use v1.0 English files on a v1.10 game installation). Ensure your language pack matches your exact game version. far cry 4 english language pack work
How to Make the Far Cry 4 English Language Pack Work: A Complete Fix Guide You need to find where Far Cry 4