Hello @Alessandro Dorgnach,
Thank you for reaching out Microsoft Q&A Forum!
Firstly, please note that the Spreadsheet Compare tool is included with certain editions of Microsoft 365 Apps for enterprise and Office Professional Plus (2013, 2016, 2019). It is not available in Excel for the web or consumer versions.
To Find Spreadsheet Compare:
- On Windows, open the Start menu and type Spreadsheet Compare.
- If you do not see it, please confirm that you have the correct edition installed (Microsoft 365 Apps for enterprise or Office Professional Plus).
More detail for you, Spreadsheet Compare does:
- Compares two Excel workbooks side by side.
- Highlights differences in:
- Values
- Formulas
- Cell formatting
- Macros
- Displays results in a grid and allows exporting the report to Excel.
For more details, please refer to the official Microsoft documentation:
Overview of Spreadsheet Compare
Compare two versions of a workbook by using Spreadsheet Compare
Best Regards.
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