Enabling Circular References by Default

by Allen Wyatt
(last updated May 26, 2018)

1

Ron has a workbook that requires the use of circular references, which he can configure Excel for just fine. After protecting and e-mailing the workbook to colleagues, upon their use, the iterative capability (required for circular references) is turned off and the worksheet fails due to circular-reference errors. Ron wonders if there is a way to default the workbook so that circular references are enabled when it is loaded by his colleagues.

The only way to make sure that the colleagues' workbooks have circular references enabled is to add a macro to your workbook. The macro is actually only one line long, and you'll want to make sure you add it to the This_Workbook module:

Private Sub Workbook_Open()
    Application.Iteration = True
End Sub

The macro runs every time the workbook is opened, and it turns on the circular references setting.

There are a couple of things to remember when it comes to having this actually work for your colleagues. First, your workbook will need to be saved in a "macro enabled" version, meaning it will have the extension XLSM. If your colleagues disable macros—either explicitly when opening the workbook or implicitly through the Security Center settings they have set up in Excel—then the macro may not run when the workbook is opened. In such situations, these colleagues will still get the circular-reference errors.

The second thing to remember is that enabling the circular-reference setting (either through this macro or by doing so manually) will affect not just calculations on your workbook, but on any workbook your colleagues may have open. This shouldn't cause a huge problem, but it is still a good thing to keep in mind.

You may also want to add a macro to turn off the circular-reference setting when your workbook is closed. This, too, should be added to the This_Workbook module:

Private Sub Workbook_Close()
    Application.Iteration = False
End Sub

This macro should actually be considered optional, and you may want to consider if you really want to include it or not. If your colleagues normally work with the circular-reference setting enabled, then the Workbook_Open macro won't really mess with how they use Excel. However, if your Workbook_Close macro is encountered, it will turn off the circular-reference setting and may interfere with how they use any other workbooks that require circular references.

ExcelTips is your source for cost-effective Microsoft Excel training. This tip (13532) applies to Microsoft Excel 2007, 2010, 2013, and 2016.

Author Bio

Allen Wyatt

With more than 50 non-fiction books and numerous magazine articles to his credit, Allen Wyatt is an internationally recognized author. He  is president of Sharon Parq Associates, a computer and publishing services company. ...

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What is four minus 0?

2018-05-29 05:20:48

David Shepherd

This is one of those situations where it may be worth capturing the original status of circular referencing, and resetting on closure. So the ThisWorkbook module would look something like

Public gbStatus as Boolean

Private Sub Workbook_Open()
gbStatus = Application.Iteration
Application.Iteration = True
End Sub

Private Sub Workbook_Close()
Application.Iteration = gbStatus
End Sub

If there is the possibility of having other workbooks open which must have circular referencing disabled, you could use the Activate and Deactivate events instead of Open and Close.


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