There are 2 file types use the .MSC file extension:
1. MuseScore Composition File
File created by MuseScore, a free program used for music composition and notation; contains the composition, which includes the key signature, instruments, time signature, and music notes; also contains score metadata, including title, subtitle, composer, and copyright information.
MSC files are used by composers to store musical scores. They can be translated into twenty different languages in MuseScore.
NOTE: MSC files apply to MuseScore versions 0.9.4 and earlier. MuseScore version 0.9.5 and later use the .MSCX file extension.
Updated: September 15, 2010
2. Microsoft Management Console Snap-in Control File
File added to the Microsoft Management Console (MMC), a program used to configure and monitor Windows computer systems; contains a "snap-in," which is a module that provides additional administration capabilities; saved in an XML format that can be viewed and edited with basic a text editor.
Snap-ins are commonly used by system administrators for device management, disk defragmentation, and system event monitoring. Custom snap-ins can be developed with the MMC Application Programming Interface (API), which is published by the Microsoft Developer Network (MSDN).
MMC is included with Windows operating systems beginning with Windows 2000. The shortcuts below can be accessed within Control Panel → Administrative Tools.
admgmt.msc - Active Directory Manager
azman.msc - Authorization Manager
certmgr.msc - Certificate Manager
ciadv.msc - Indexing Service
comexp.msc - Component Services
compmgmt.msc - Computer Management
devmgmt.msc - Device Manager
dfrg.msc - Disk Defragmenter
dhcpmgmt.msc - DHCP Management
diskmgmt.msc - Disk Management
eventvwr.msc - Event Viewer
fsmgmt.msc - Shared Folders
gpedit.msc - Group Policy
ipaddrmgmt.msc - IP Address Manager
lusrmgr.msc - Local Users and Groups
ntmsmgr.msc - Removable Storage
ntmsoprq.msc - Removable Storage Operator Requests
perfmon.msc - Performance Monitor
rsop.msc - Resultant Set of Policy
secpol.msc - Local Security Policy
services.msc - Services
tsmmc.msc - Remote Desktop
uddi.msc - UDDI Services Management
wmimgmt.msc - Windows Management Infrastructure (WMI)
winsmgmt.msc - WINS Server Management
Updated: April 27, 2013