The IDX file is associated with 'Index'. IDX file stores an index of files that are accessed by different program. Index files are also use with search functions to search the data quickly and easily. IDX files are used with many applications such as Microsoft Outlook, Quicken and Java and ESRI ArcView.
File extension errors generally occur when the appropriate program is not installed in your system. Scan your system to identify and fix IDX file extension errors.
Trouble opening IDX files on Microsoft Windows?
Advanced File Optimizer
Need help opening a IDX file? Advanced File Optimizer will do this for you. Opening a IDX file only takes a few clicks and is very easy, even for novice users.
Compatible with Window XP, Vista, 7, 8, 8.1 and 10
CA is the new name for Computer Associates. Visual Objects simplifies the integration of Windows and browser clients, web servers, middleware and back-end database systems. The .APP file usually has an associated .IDX index file and perhaps a .$DX backup index file. A *.CDP may also be present.