The repack doesn’t check your current version. It overwrites and adds the missing side-by-side assemblies that modern Windows erroneously ignores.
DirectX End-User Runtimes Web Installer — Repack Overview directx end user runtimes web installer repack
When searching for "DirectX Repack," you will encounter many shady websites. Do not download DirectX from random file-hosting sites. DirectX is a system-level component; a tampered version could contain malware. The repack doesn’t check your current version
Here is the safe route:
The "DirectX End User Runtimes Web Installer Repack" is an unnecessary and potentially dangerous utility. The file it aims to create—an offline installer—already exists officially as the DirectX End-User Runtimes (June 2010). Do not download DirectX from random file-hosting sites
Third-party repacks offer no functional advantage over the official redistributable but introduce security vulnerabilities and legal concerns. Users should strictly utilize official Microsoft channels for DirectX updates.