@ANDRESASJ
According to your description, I have a few questions:
- Does all workbooks have this problem regardless of the cell formats (Such as Number, General, Date, and etc.)?
Please ensure the cells are not set as text format. - When entering the equal sign and formula in the formula bar, does any error message pop up?
Please take a screenshot of the cell that you enter formula in. - In addition, the input method should use English half-width symbols.
- It is also recommended to press F9 or Fn+F9 to refresh.
If this works, please go to File > Options > Formulas, tick the box of "Auomatic" under Caculation options section. - If the steps above do not work, please run Excel in safe mode, hold down the Ctrl key, double-click the Excel icon to open Excel, and select “Yes” enable safe mode of Excel. Then create a blank workbook to test whether the function can work normally.
Safe mode can help us troubleshoot third-party add-ons, as well as startup items.
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