This could have occurred because either: This formatting will cause Excel to interpret anything that is subsequently entered into the cell (including formulas) as text.
To correct this, you need to convert the cell's data type to the 'General' data type.
The option is located in the options panel, under 'Advanced' options.
That setting affects all the other workbooks the you open during that session.
In this case, the workbook calculation was set to Automatic on all the machines – that’s the first thing we checked.
However, none of the shortcuts had any effect on the non-calculating cells in this workbook.
I also tried a macro that did a full calculation, and that didn’t work either. Next I wrote a macro that replaced all the “=” signs at the start of all formulas in the workbook.