Final Fantasy XI game data
File type: Game file
An .ibf file contains game data used by Final Fantasy XI on Microsoft Windows. Final Fantasy XI was also associated with video game consoles and mobile operating systems.
It is part of the game's installed data and is not intended to be opened as a standalone document.
Found 2 different file type records with the same ibf filename suffix.
File type category:
Game file
Date updated: October 21, 2026
Final Fantasy XI is a massively multiplayer online role-playing game developed and published by Square Enix. The game was released for Microsoft Windows and was also available on selected video game consoles and mobile operating systems.
The .ibf file stores data used by the game. The Final Fantasy XI client reads these files as part of its installed game data while running.
These files are part of the game's Windows installation. They should not be edited or deleted because doing so may prevent the game from working correctly.
There is no general-purpose program for opening an .ibf file. The Microsoft Windows version of Final Fantasy XI uses these files automatically from its installation folders.
Do not open the file in a text editor or rename it. To view the associated game content, use the Final Fantasy XI client rather than opening the file directly.
An .ibf file cannot be meaningfully converted with a standard file converter. It is an internal Final Fantasy XI game-data file, not an interchange format.
Keep the file in its original form and use the Final Fantasy XI client or its update process to manage the game's data.
Software applications that handle other tasks involving ibf files:
Microsoft Windows
File type category:
Backup file
Date updated: July 18, 2019
The ibf file extension is associated with the Instant Backup Archive a backup solution for Microsoft Windows operating system developed by Towodo Software.
The ibf file stores backup archive.
The Instant Backup Archive seems to be obsolete product.
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