What is .XSN file extension?
Form template used by Microsoft InfoPath, a form design and creation program; saved as a compressed .CAB (cabinet) file, which contains multiple files.
XSN files include a schema (.XSD) file, an .XSL style sheet, .JS or .VBS script files, and image files used by the form interface. Individual files can be extracted from XSN files by choosing File ? Extract Form Files within InfoPath.
You can see a list of software programs here on www.easyfileopener.org that can open this file type so that you don’t need to search for it on the web. You can then open your file with this extension using a software listed below.