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Can't save spreadsheets in .xlsx format
I am still using the old Office XP (2002) software. My Windows 10 pc has the 'Compatability Pack for the 2007 Office system' installed. Looking in Default Programs, .xlsx is associated with 'Microsoft Open XML Converter'. when trying to save a spreadsheet, the Excel 2007 Workbook ".xlsx" is not listed under File Name. Only Excel Workbook ".xls" is listed. This is working fine on my Windows 10 laptop.
Thanks for any help.