Notes about the SXX 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 SXX file type is primarily associated with 'SAS' by SAS Institute Inc.. SAS delivers an integrated set of business intelligence software and services. This file contains the executable form of a module.