BestSync settings file
File type: Settings, options, themes or skins file
A .xfsf file contains settings data used by BestSync.
It is a BestSync configuration file rather than a document intended for use in other applications.
File type category:
Settings, options, themes or skins file
Date updated: October 7, 2026
The .xfsf file extension is associated with BestSync, a utility for file backup and synchronization on Microsoft Windows.
A .xfsf file stores settings for the BestSync program. BestSync uses this data as part of its configuration when managing backup and synchronization tasks.
Open the file with BestSync on Microsoft Windows. The program uses the file for its settings.
Software apps that manage or store settings in xfsf files:
Microsoft Windows
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