Work through this in order
- Open the workbook as a local file.
- Select the XLSX Shared Strings Inspector.
- Review the first string entries in the shared string table.
- Compare string indices with cells in a sheet preview.
- Remember that some modern workbooks store text inline instead.
Use the matching tool
Inspect a local copy with XLSX Shared Strings Inspector. After the check, save or repair files only using trusted software that supports the format.