Notes about the XIA file extension:
Incorrect file associations could be the result of underlying issues within your PC system. As such it is highly recommended to scan your PC for invalid registry entries, unused processes and other unfavourable system settings to identify slowdown issues.
The XIA file type is primarily associated with 'Chiasmus' by Bundesamt für Sicherheit in der Informationstechnik. Chiasmus for Windows is an encryption program for Windows PCs (Windows 95, 98, 2000, ME, NT 3.5.2 and higher, XP). With Chiasmus for Windows it is possible to encrypt individual files or entire folders.