What of Office 2016 are you using (e.g., Home & Business, Professional Plus)?
Right-click the Setup.exe file inside the repack folder and select Run as Administrator . office 2016 language interface pack repack
A "repack" (repackaged) file is a modified version of original software, usually created by third-party, unofficial sources. An generally refers to a single, compiled installer containing multiple language packs or a modified LIP that bypasses certain installation checks [1, 2]. What of Office 2016 are you using (e
Downloading repacks from unverified third-party forums exposes your system to malware, trojans, and keyloggers hidden inside the installer scripts. Home & Business
Analysis and Deployment Considerations for Microsoft Office 2016 Language Interface Packs
This downloads the official bits from Microsoft—no repack required.