Files that contain the .fbk file extension are most commonly associated with the Microsoft Dynamics NAV software application, previously known as Microsoft Navision.
The FBK files that are used by this software contain a backup of a database that has been created with the program. These files often contain financial data that is used in the analysis and management of business information and are a backup copy of the applicant's FDB files.
The FBK files that are stored on a user's system can be used to restore the original FDB file if the FDB file becomes lost or corrupted.
The .fbk file suffix is also used for backup files for the FlashFXP and the Family Tree software applications.
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