.WK4 File Type
File extension: WK4 or .wk4
Author of the .wk4 file extension: Lotus/IBM
Category: Document file
Programs that use the .wk4 file type: IBM Lotus 1-2-3or the Lotus 1-2-3 WK4 File Converter
Explanation of .wk4 file extensions:
The .wk4 file extension was used by Lotus 1-2-3 in version 4 of the software for saving spreadsheets.
Typical problems associated with the .wk4 file extension:
One of the most common problems with .wk4 files is that this is an earlier format and no longer widely used. In order to work with .wk4 files, you will need an application capable of opening them.
When using alternative applications to open WK4 files such as Excel 5.0 with the Lotus 1-2-3 converter, the original WK4 drawing objects such as text boxes, arcs, arrows, and lines are not converted.
Another common .wk4 problem occurs when the Windows registry is loaded with invalid instructions or has had references to .wk4 files removed by spyware or other processes. File corruption and lost file associations can be problems with WK4 files.
Solutions/Recommendations:
If you need to work with a WK4 file, you will need either Lotus 1-2-3, Excel 7.0 or above, or the Lotus 1-2-3 File Converter. Excel 5.0 requires the converter while newer versions of Excel are able to handle WK4 files.
If you have lost the drawing objects of a WK4 file, use Excel 7.0 or above to open the file as this has been solved in later editions of Excel.
Run a registry cleaner if your WK4 files are corrupt or generating computer errors.
Associated links:
Lotus 1-2-3 - http://www-306.ibm.com/software/lotus/products/123/
Importing Lotus Files to Excel - http://support.microsoft.com/kb/q61941/
fileextensiontype.com