Notes about the WK4 file extension:
Incorrect file associations could be the result of underlying issues within your PC system. As such it is highly recommended to scan your PC for invalid registry entries, unused processes and other unfavourable system settings to identify slowdown issues.
The WK4 file type is primarily associated with '1-2-3' by IBM. Lotus 1-2-3 version 4 spreadsheet. This was a Lotus product. Lotus was bought out by IBM.
Detailed information for file extension WK4:
Primary association: 1-2-3
File classification: Spreadsheet
Mime type: application/vnd.lotus-1-2-3, application/lotus123, application/x-lotus123, application/wk4, application/x-lotus123, application/x-wk4Identifying characters
Hex: 00 00 1A 00 02 10 04 00 00 00 00 00
'Identifying characters' used on FILExt.com are
provided by Marco Pontello from his TrID database
Important: Invalid file associations could be the result of underlying issues within your Windows PC. It is highly recommended that you scan your PC for invalid registry entries, unused processes and other slowdown issues.