File Extension WK4

  • Full name
    Lotus 1-2-3 Version 4.x Spreadsheet Format
  • Developer
  • Popularity
Have you encountered a problem with a WK4 file? Don’t you know which program opens a file with this extension? You will find all the information you need about working with a WK4 file here. In the further part of this page we have added a list of programs that should open your WK4 file. It is enough you choose a proper application for your operating system, download and install it.

What is WK4 file?

The extension WK4 marks tables (spreadsheets) of the spreadsheet Lotus 1-2-3 from IBM. The extension was used by version 4 of Lotus 1-2-3.

More info

These files contain data in cells organized in columns and rows. In addition, the files may also contain graphics, formulas, and macros. Unfortunately, these macros may also contain malicious code, which is why it is advisable, especially for files from unknown sources, to subject them to virus scanning before executing the macros.

Originally developed by Lotus Corporation, Lotus 1-2-3 was a popular spreadsheet as part of Lotus SmartSuite in the 1990s. IBM acquired Lotus in 1995. The Lotus SmartSuite is discontinued but is still available.

Some versions of Microsoft Excel support Lotus 1-2-3 files, but from version 2007 onwards. The import of files is subject to restrictions, some properties may be lost.

Programs which can open a WK4 file

How to open file with WK4 extension?

In order to open a file with WK4 extension one of the following programs must be installed on user’s system. If a problem with opening WK4 file occurred, it is highly possible that none of the listed programs is present on user’s system. Even if one or more said programs are installed, there may be issues related with given programs. In order to solve a problem with WK4 files, follow the instructions below.
Install Lotus 1-2-3 or other program from the list

Most often resolving problems with opening WK4 files is very simple. Just install an appropriate program that supports such files. All of the listed programs support WK4 files, but may vary in offered function and purpose. Some programs may be capable only of viewing contents of WK4 files or offer file conversion options, but may not be capable of editing such files.

Set Lotus 1-2-3 as the default program for opening WK4 files

It is possible that although a compatible program has been installed on user’s system, it is not used by the system to open it. This may happen because no default application was associated with this type of files. To associate WK4 files with given application, select "Open with" from drop-down menu (accessed by right-clicking on the file). Then select from the list the program or application you want to be used to open this type of file. If the Lotus 1-2-3 applications is not on the list, select "Browse" option in order to manually locate the directory where Lotus 1-2-3 has been installed.


Check the section that lists most common problems with WK4 files

Sometimes problems with opening WK4 files may not lie with the application itself, but can arise due to other causes, such as:

  • File data is corrupted
  • WK4 files has been not been completely download from the internet (only a part of the data has been downloaded)
  • Currently used user account hasn’t been granted necessary privileges to open WK4 files (should that be the case, please contact your system administrator or IT specialist)
  • WK4 file was being copied from a corrupted storage device and is incomplete or data is corrupted. (Copying files from unknown or untrusted sources should be conducted with great care as such files may contain malicious software, which can damage your system)

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