This error can be triggered with different Excel file formats including XLS, XLSX, XLSM, etc. Now, what causes this error and how you can fix it, we will discuss that in this post.

Check your VBA code. Review the field size. Check OLE objects. Repair the problematic Excel file. Enable disabled add-ins. Turn on all macros in settings. Repair Microsoft Excel.

The Excel file will get saved to your PC with a .xlsx extension, which can be opened in any spreadsheet app, including Microsoft Excel, Apple Numbers, OpenOffice, LibreOffice, and more.