Filename Extensions
If you are seeking information about file extensions, then you are in the right place at right time.

Details of extension .4sw

1 extension(s) and 0 alias(es) in our database

Below, you can find answers to the following questions:

  • What is the .4sw file?
  • Which program can create the .4sw file?
  • Where can you find a description of the .4sw format?
  • What can convert .4sw files to a different format?
  • Which MIME-type is associated with the .4sw extension?
4DOS Swapfile .4sw file icon

4DOS Swapfile

The 4SW file is a 4DOS Swapfile. 4DOS is a command line interpreter, designed to replace the default command interpreter COMMAND.COM in DOS and Windows 95/98/Me.
Detailed description not available
Category: Data files
Application: 4DOS
Program name: -
Mime-type: application/octet-stream
Magic bytes (HEX): -
Magic string (ASCII): -
Related extensions:
MS-DOS Batch File
4DOS Batch File
MS-DOS Overlay Data

Other types of files may also use the .4sw file extension. If you have helpful information about .4sw extension, write to us!

Is it possible that the filename extension is misspelled?

We found the following similar extensions in our database:

Four Winds Mah Jong Saved Game
Macro Toolworks Data
Turbo Smetchik Data
R&R ReportWorks SQL Report Writer Report
S4/TEXT and Tagless Editor Data

The .4sw filename extension is often given incorrectly!

According to the searches on our site, these misspellings were the most common in the past year:

4ws (1), sw (1), esw (1), 4w (1), tsw (1), rsw (1)

Can't open a .4sw file?

If you want to open a .4sw file on your computer, you just need to have the appropriate program installed. If the .4sw association isn't set correctly, you may receive the following error message:

Windows can't open this file:

File: example.4sw

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 from a list of programs that are installed on your computer.

To change file associations:

  • Right-click a file with the extension whose association you want to change, and then click Open With.
  • In the Open With dialog box, click the program whith which you want the file to open, or click Browse to locate the program that you want.
  • Select the Always use the selected program to open this kind of file check box.

Supported operating systems

Windows Server 2016/2019/2022, Windows 7, Windows 8, Windows 10, Windows 11, Linux, Mac OS X, macOS, iOS, Android