Written by Allen Wyatt (last updated October 1, 2022)
This tip applies to Excel 2007, 2010, 2013, 2016, 2019, 2021, and Excel in Microsoft 365
Mike uses VLOOKUP regularly in his worksheets, but wonders if there is a way to make the function run a macro if it fails to return a value.
There are a couple of ways you could approach this problem. First, you could use a conditional formula to determine whether VLOOKUP will return a value or an error. If it will return an error, then you can have the formula run a user-defined function (MyUDF), as shown here:
=IF(ISERROR(VLOOKUP(B2,CODES,1,FALSE)),MyUDF(),VLOOKUP(B2,CODES,1,FALSE))
All you need to do is make sure that you put your actual VLOOKUP code in the formula (twice) and replace MyUDF with the name of the user-defined function you want to trigger.
Another approach is to set up an event handler for the Calculate event. This can be rather simple, as in the following:
Private Sub Worksheet_Calculate() If IsError(Range("A1")) Then Call Macro1 End Sub
This example assumes that the VLOOKUP formula is in cell A1 and that you want to run a macro called Macro1 if the VLOOKUP returns an error. Your macro could then do whatever you need it to do. Remember, as well, that the Calculate event handler should be placed in the ThisWorksheet object.
You could also make the Calculate event handler a bit more robust, as shown here:
Private Sub Worksheet_Calculate() On Error GoTo myMac Worksheets(1).Select If Range("A1").Value Then Exit Sub End If myMac: Macro1 'macro to run if VLOOKUP fails End Sub
Note:
ExcelTips is your source for cost-effective Microsoft Excel training. This tip (10107) applies to Microsoft Excel 2007, 2010, 2013, 2016, 2019, 2021, and Excel in Microsoft 365. You can find a version of this tip for the older menu interface of Excel here: Making VLOOKUP Trigger a Macro.
Program Successfully in Excel! This guide will provide you with all the information you need to automate any task in Excel and save time and effort. Learn how to extend Excel's functionality with VBA to create solutions not possible with the standard features. Includes latest information for Excel 2024 and Microsoft 365. Check out Mastering Excel VBA Programming today!
Using the UNIQUE function you can derive unique values from a range of cells. By expanding the range of cells accessed by ...
Discover MoreThe COUNTIF function can be very handy when searching a range of cells for values. In some instances, though, it can ...
Discover MoreFunctions are at the heart of Excel's power in working with data. One of the most misunderstood functions provided by ...
Discover MoreFREE SERVICE: Get tips like this every week in ExcelTips, a free productivity newsletter. Enter your address and click "Subscribe."
There are currently no comments for this tip. (Be the first to leave your comment—just use the simple form above!)
Got a version of Excel that uses the ribbon interface (Excel 2007 or later)? This site is for you! If you use an earlier version of Excel, visit our ExcelTips site focusing on the menu interface.
FREE SERVICE: Get tips like this every week in ExcelTips, a free productivity newsletter. Enter your address and click "Subscribe."
Copyright © 2025 Sharon Parq Associates, Inc.
Comments