repair excel column headings

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Excel column headings have been changed from A, B, C etc. to numbers 1,2,3.  How can I revert to letters?

 

2 Replies

@DEChap1010 

If you're on Windows:

  • Select File > Options.
  • Select Formulas in the navigation pane on the left.
  • Clear the check box R1C1 reference style in the Working with formulas section.
  • Click OK.

If you're on Mac:

  • Select Preferences from the Excel menu.
  • Select General.
  • Clear the check box R1C1 reference style.

@Hans Vogelaar 

 

Thank you very much for your help.  It solved my dilemma.