Known FSF Files

Principal FSF Type

.FSF

Formatting:	.fsf
Classification:	Microsoft Office Cache Data

An FSF file is a cache file used in Microsoft Office. Cache files are temporary files stored on the user's local disk or on a local network disk.

Organization:	Microsoft Corporation
Class:	Temporary Files
Subkey:	HKEY_CLASSES_ROOT\.fsf

Software Programs That Open The Microsoft Office Cache Data:

Microsoft Office by Microsoft Corporation

Windows

Mac

Other FSF File Associations

.FSF

Formatting:	.fsf
Classification:	FSL Feat Setup Script

An FSL file is a script or source code file used by the analysis tools library called FSL. It stores feat setup script from FSL.

Organization:	Analysis Group
Class:	Developer Files

Software Programs That Open FSL Feat Setup Script Files:

FSL by Analysis Group

Compatible with:

Windows

.FSF

Formatting:	.fsf
Classification:	Fox VB Project

An FSF file is a data file associated with the FOX VB applications. The FSF file of this type appears to be obsolete and no longer in use.

Organization:	Unknown Developer
Class:	Data Files

Software Programs That Open Fox VB Project Files:

Unknown Software by Unknown Developer

Compatible with:

Windows

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Understanding FSF Issues

Issues Opening FSF Files

Microsoft Office is Not Installed

When trying to open your FSF file, you get the error "Can't Open FSF File Type". If so, it typically means that you don't have Microsoft Office installed for %%os%%. The typical path of opening your FSF with a double-click won't work because %%os%% cannot make the program connection.

Tip: If you know of another program that can open your FSF file, you can try opening it by selecting the application from the programs listed.

Obsolete Version of Microsoft Office

In some cases, you might have a newer (or older) version of a Microsoft Office Cache Data file that is unsupported by your installed application version. Installing the latest version of Microsoft Office from Microsoft Corporation is recommended. The primary cause of this problem is that your Microsoft Office Cache Data file was created by a different (newer) version of Microsoft Office than what's installed.

Tip: You can sometimes get hints about the right program version by right-clicking on the FSF file, selecting "Properties", and looking at the version information.

Summary: In either case, the majority of problems opening FSF files are related to not having the correct software application installed on your computer.

More Causes of Problems Opening FSFs

You can still experience errors opening FSF files even with the latest version of Microsoft Office installed on your PC. There can be external issues inside of %%os%% that are causing these errors when opening FSFs. These issues include:

• FSF file references in the Windows Registry are broken
• Accidental deletion of the description of the FSF file in the Windows registry
• Invalid installation of a FSF-associated program (eg. Microsoft Office)
• Your FSF file is corrupted (issues with your Microsoft Office Cache Data file itself)
• Your FSF has adversely impacted by malware
• Hardware associated with FSF has outdated drivers
• Windows cannot load your Microsoft Office Cache Data file due to insufficient resources (eg. RAM)