FAQs | NodeXL


Frequently Asked Questions

We’ve written a comprehensive guide to installing NodeXL Pro. Read it here.

A self-loop is created when a vertex links to itself.
Self-loops appear as circles in NodeXL network visualizations.
The display of self-loops can be controlled via the “Visibility” column in the Edges worksheet.
To reveal the “Visibility” column select the menu item:
NodeXL Pro>Show/Hide>Workbook Columns>Visual Properties
In the Edges worksheet, each edge has a “Visibility” column.
In the “Visibility” column you can place a formula that checks if Vertex1 = Vertex2.  If so, the formula places a “0” (Zero) in the cell.  If not, the formula places a “1”.
“0” (Zero) = “Skip” (which acts as if the data has been deleted).
The Excel formula is:
=IF([@[Vertex 1]]=[@[Vertex 2]],0,1)
Then Refresh the graph and the self -loops should no longer be displayed!

NodeXL Pro allows for 3rd party developers to create data importers that can integrate into the NodeXL Pro > Data > Data Import menu. In that menu you will also find a list of links to 3rd party importers currently available.

Flickr limits access to their API on a per key basis. Your should stay under 3600 queries per hour or flickr may block or terminate your access.

If you are publishing a paper that makes use of NodeXL we would be happy to feature it in our list!  Please see:


for information about NodeXL in research and education.

To cite NodeXL in your papers please use the following:

Smith, M., Ceni A., Milic-Frayling, N., Shneiderman, B., Mendes Rodrigues, E., Leskovec, J., Dunne, C., (2010). NodeXL: a free and open network overview, discovery and exploration add-in for Excel 2007/2010/2013/2016,http://nodexl.codeplex.com/ from the Social Media Research Foundation, http://www.smrfoundation.org

Issue: NodeXL will not install and displays:

The value of the property ‘type” cannot be parsed.  The error is: Could not load file or assembly “Microsoft.Offfice.Business.Applications.Fba.Version=

To resolve this issue Right-Click the NodeXL Pro installation file and select “Run as Administrator”

There are several other possible solutions to this problem.  If these steps do not resolve the issue, please install TeamViewer and send a message with the Team Viewer ID and PW to info@smrfoundation.org and we will fix the problem as soon as possible.

Issue: NodeXL Crashes and displays “Object reference not set to an instance of an object”

A common cause for this issue is the location of the NodeXL Pro License key.
Delete the current NodeXL Pro license key.
Find the email that was sent with the initial NodeXL Pro license key attached.
Copy the NodeXL Pro License Key to the local file system. A good place is a folder created on the desktop called “NodeXL Pro”.
Restart NodeXL Pro. It will ask for the location of the NodeXL Pro License Key. Once that is provided, it should work properly.

There are several other possible solutions to this problem. If these steps do not resolve the issue, please install TeamViewer and send a message with the Team Viewer ID and Password to info@smrfoundation.org and we will fix the problem as soon as possible.

If this message shows up, you have reached the limits of your machine. Please take a look at the sytem requirements above.

This issue can be resolved by copying the original key attached to the delivery email back onto the target system.  On some systems files can be set to be read only by default.  If this happens, NodeXL Pro can then not update (and validate) its license key.    To resolve the issue, find the location of the “.LIC” file we sent to you.  This is the original license key file sent as an attachment to an email.    Save this file to the location of the current license key file (you may have created a folder for this or left it in downloads or the desktop).  When you locate the NodeXL Pro License key file (“licensePro_#.lic”) in the file browser, right-click it and select Properties.  Then uncheck “Read-Only”.  This should then allow NodeXL Pro to read and update the license key.

If you cannot resolve this issue please send an email to info@smrfoundation.org and we will help you as soon as possible.

The only major limit of the public free Facebook is time. You can get as much historical data from fan pages and groups as you like, yet the network data download may take quite a while as the download stops and resumes.

Please note that the download of network data from large fan pages can easily max out your system memory if you do not limit the number of reactions, likes and shares when setting up the data importer.