Instead of a full system backup (which is slow), the tool performs a "Lightweight Registry & DLL Snapshot." It scans the current versions of specific legacy DirectX files (like d3dx9_24.dll through d3dx9_43.dll and XAudio components) that the June 2010 package intends to update. It records their current version numbers and registry keys.
(Often fixed by reinstalling via the redistributable rather than the web installer). Final Thoughts directx end-user runtimes june 2010 microsoft download
: Contains all DirectX side-by-side components released up to and including June 2010. Installation Details Instead of a full system backup (which is