The best language pack matches your Office 2016 build number (e.g., 16.0.xxxx.xxxx). Mismatched versions can cause crashes, missing text, or activation errors. Always download the pack corresponding to your exact Office update channel (Current, Semi-Annual Enterprise, or Volume License).
The Microsoft Office 2016 English Language Pack (64-bit) is best suited for users working in multilingual environments who need the stability of a 64-bit system but require the interface and proofing tools to be in standard English for professional consistency. microsoft office 2016 english language pack 64bit best
This is the primary feature. Once installed, the pack translates the "shell" of the software. The best language pack matches your Office 2016
Since official standalone packs are hard to get, the best practical solution is: The most reliable method: Uninstall your current Office
Use the built-in Office Proofing Tools / Language Preferences (if you have Office 2016 Professional Plus retail):
The most reliable method: Uninstall your current Office and reinstall a native English (64-bit) version using your product key.
The pack integrates into the Office Language Preferences.