Check Tools-Options on the calculation tab make sure it is set to Automatic.
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-John
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"TexasIndoorGolf" wrote:

I noticed about a week ago that none of my formulas in any of my worksheets
are updating - meaning that if I change a number in a column that is being
summed, the sum will not change. This applies to ALL of the formulas I
create in Excel. Did I change a setting in Excel that I don't know about?