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Dear respected Al Christenson2,
Good day! Thank you for posting to Microsoft Community. We are happy to help you.
As per your description, to highlight blank cells in a column using Conditional Formatting in Excel, click on the header of the column where you want to identify blank cells (for example, Column A). This will select the entire column. In Conditional Formatting> Use a formula to determine which cells to format, enter the following
=ISBLANK(A1)
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I'm sorry and I apologize for that.
Appreciate your patience and understanding and thank you for your time and cooperation.
Sincerely,
Waqas Muhammad