Configuration files let you customize advanced settings such as security information and the WSE configuration. These files let you control the behavior of the test during runtime.
The standard .NET configuration file, mmdrv.exe.config, is located in the VuGen installation folder. Some applications have their own configuration file, app.config.
You can customize the test run further, by filtering out the input or output. In addition, you can configure security information. such as token information and whether or not to allow unsigned test certificates.
For task details, see How to Customize Configuration Files.