.VMSN File Extension

There is only one file type that uses the .VMSN extension:

VMware Snapshot State File

VMware Snapshot State File

File created by VMware virtualization software; saves the virtual machine (VM) data for a snapshot, which is a frozen state of the VM saved at a particular point in time; can be one of several different snapshots used by the virtual machine; saved with a .VMSD file, which contains the metadata for the snapshot.

VM snapshots are useful for saving a fresh installation of a guest operating system (OS) so that users can revert back to a clean OS install even after applications have been installed.

NOTE: You do not need to open VMSN files manually since snapshots can be saved and loaded from within the VMware software's user interface.

Software's name License Platforms
VMware Fusion VMware Fusion Commercial MacWindows
VMware Workstation VMware Workstation Commercial LinuxWindows

Updated: February 14, 2013

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