Notes about the XMN 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 XMN file type is primarily associated with 'Expression Media' by Microsoft Corporation. Microsoft Expression Media is a commercial digital asset management (DAM) cataloging program for Microsoft Windows and Mac OS X operating systems. It is the next version of iView MediaPro which Microsoft acquired in June 2006. XMN is a notepad format.