Error 2 "Could not load file or assembly 'NationalInstruments.UI.WindowsForms"

Updated May 14, 2018

Reported In


  • Measurement Studio

Issue Details

When I run my program in Visual Studio 2013 I continue to get this error: 

Error 2: 'Could not load file or assembly 'NationalInstruments.UI.WindowsForms, Version=, Culture=neutral, PublicKeyToken=18cbae0f9955702a' or one of its dependencies. The located assembly's manifest definition does not match the assembly reference.

Where can I download NationalInstruments.UI.WindowsForms.dll?


The NationalInstruments.UI.WindowsForms.dll is part of the Measurement Studio Installation. To get this dll on your computer you will need to download and install Measurement Studio.