Locking a cell based on a cells content

  • Thread starter Thread starter The Rook
  • Start date Start date
T

The Rook

I am wanting to lock cell A1 from being able to be populated if both B1 & C1
are both empty.

Is this possible?
 
Data - Validation, Custom
=COUNTBLANK(B1:C1)<>2

Also, uncheck the "ignore blank" option.
 
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