A family of Microsoft spreadsheet software with tools for analyzing, charting, and communicating data.
This message indicates that Excel detected corruption in the workbook and repaired it when opening the file. Specifically, Excel found formulas it could not interpret correctly and removed them from several worksheets. The affected files inside the workbook were sheet2.xml, sheet3.xml, sheet4.xml, sheet6.xml, sheet7.xml, and the calculation chain file calcChain.xml. After the repair, those formulas are gone, so some cells that previously contained formulas may now be blank or contain fixed values.This typically happens when the workbook becomes partially corrupted, when a formula references something invalid, or when a workbook created or edited in another system (for example Google Sheets, LibreOffice, older Excel versions, or export software) writes invalid formula structures into the Excel XML. It can also occur if the file was interrupted while saving or synced through cloud storage during a save.
Open the repaired workbook and check the sheets mentioned in the message. Look for cells that should contain formulas but are now empty or contain values instead. If you have an earlier version of the file, compare those sheets and restore the formulas.
If the file still behaves oddly, the safest repair process is to move the data into a fresh workbook. Create a new Excel file, then copy each worksheet’s values and formulas from the repaired file into the new workbook sheet by sheet. Save the new file under a new name.
You can also force Excel to rebuild the calculation chain, which sometimes clears lingering calculation issues. Open the workbook, press Command + Shift + Option + F9 and then save the workbook.
If you want to check whether formulas were removed in large ranges, you can temporarily show formulas with Command + `. That displays all formulas in cells so you can quickly see where formulas are missing.
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hth
Marcin