Please Note: This article is written for users of the following Microsoft Excel versions: 2007, 2010, and 2013. If you are using an earlier version (Excel 2003 or earlier), this tip may not work for you. For a version of this tip written specifically for earlier versions of Excel, click here: Tracing Errors.
Suppose you have a worksheet in which there is an error (such as #VALUE! or #DIV/0! or #NUM! or any number of other errors), but you are not quite sure what caused it. As you may know, this is not that odd of an occurrence. It is possible (and sometimes common) to have a single error propagated throughout an entire worksheet. If you don't know where the error is coming from, the easiest way to find out is to let Excel help you.
If a cell contains an error value, notice that the upper-left corner of the cell has a small green triangle in it. If you select the cell, an information tool tip appears near this green triangle. When you click on the tool tip you see a menu that includes several different helpful suggestions, including an option to Trace Error. If you choose this option, you get an arrow pointing from the cell that contains the original error.
You should note that you can use the Trace Error auditing tool only to track down the source of obvious error conditions, meaning those that display an error condition such as #NA or #NAME. Subtle errors, such as adding together the wrong values or using the wrong function, cannot be detected by Excel and must be tracked down manually.
ExcelTips is your source for cost-effective Microsoft Excel training. This tip (8350) applies to Microsoft Excel 2007, 2010, and 2013. You can find a version of this tip for the older menu interface of Excel here: Tracing Errors.
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2017-01-18 19:10:18
James Smith
Hi,
Thanks for the tip, but is there some way to show the cells where an actual error occurs (say, actually divide something by 0 in that cell) as opposed to all cells that link indirectly to a cell with a real error.
2016-08-05 13:26:04
David A. Gray
I hoped this tip would discuss at some length the awkward, yet powerful, Trace Precedents and Trace Dependents tools, and that I might thereby learn something that would make them easier to use. I was pretty disappointed by what I found, although I absolutely recognize that the provided information is extremely useful if it is new to you.
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Please Note:
This article is written for users of the following Microsoft Excel versions: 2007, 2010, and 2013. If you are using an earlier version (Excel 2003 or earlier), this tip may not work for you. For a version of this tip written specifically for earlier versions of Excel, click here: 
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