Can’t run the Ethernet IP Capacity Tool? How to fix the missing mfc100.dll error



So you’ve downloaded and installed Rockwell’s Ethernet/IP capacity tool, but it won’t run?

Are you getting the below pup-up error which states, “The program can’t start because mfc100.dll is missing…”

Ethernet IP Capacity Tool ErrorWell the good news is there is a pretty easy fix for this issue.

What you need is to install the Visual Studio 32bit redistributable package.

To get it, start buy navigating to the below URL:

Once downloaded, install the above package.

Once installed, you should now be able to open and run Rockwell’s Ethernet/IP Capacity Tool.

For more information about this tool, see our previous articles:


I hope you found today’s article helpful. If you have any comments, questions, or suggestions please don’t hesitate to leave them with us by filling in the “post a comment or question” link below.

Until next time, Peace ✌️ 

Shawn M Tierney
Technology Enthusiast & Content Creator

Have a question? Join my community of automation professionals and take part in the discussion! You'll also find my PLC, HMI, and SCADA courses at TheAutomationSchool.com.

Shawn Tierney
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