CFOSPNET file format description

Many people often share .cfospnet files without providing instructions on how to use them. This can make it difficult for users to determine which program is compatible for editing, converting, or printing .cfospnet files. To address this issue, we have created this page to offer assistance and guidance on handling .cfospnet files. We provide information on compatible software, editing instructions and conversion options to help users effectively interact with .cfospnet files.

Our aim is to simplify the process and promote seamless use of the .cfospnet file format.

1 filename extension(s) found in our database.

.cfospnet - cFos Personal Net Registration Key

The CFOSPNET data files are related to cFos Personal Net. The CFOSPNET file is a cFos Personal Net Registration Key. cFos Personal Net is a file sharing solution which can be used both over LAN or the web.

cFos Personal Net
Data files
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cFos Personal Net Registration Key related extensions:
PLINK Max Permutation Test Report Data
Microsoft SQL Server Data Source
Intuit Quicken for DOS Index File
Microsoft Expression Web Navigation Data
Kemper Profiler Profile Data
Samsung Galaxy Multi Boot Image

Naturally, other applications may also use the .cfospnet file extension. Even harmful programs can create .cfospnet files. Be especially cautious with .cfospnet files coming from an unknown source!

Can't open a .cfospnet file?

When you double-click a file to open it, Windows examines the filename extension. If Windows recognizes the filename extension, it opens the file in the program that is associated with that filename extension. When Windows does not recognize a filename extension, you receive the following message:

Windows can't open this file:


To open this file, Windows needs to know what program you want to use to open it. Windows can go online to look it up automatically, or you can manually select one from a list of programs that are installed on your computer.

To avoid this error, you need to set the file association correctly.

Operating systems

At, we strive to provide a seamless user experience by ensuring compatibility with a wide range of operating systems. The following is a comprehensive list of the operating systems currently supported by

Windows XP/Vista, Windows 7/8/10, Windows 11, CentOS, Debian GNU/Linux, Ubuntu Linux, FreeBSD, macOS, Mac OS X, iOS, Android

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