There are a few methods you can use to prevent an executable from running at startup. Note that these are general steps you can take, and don't have a specific order. It may be helpful to reboot the cRIO into safe mode before performing these steps (hold the reset button of the cRIO for 5+ seconds), as that will prevent any startup applications from running (this will however reset the IP address as well):
Collaborate with other users in our discussion forums
A valid service agreement may be required, and support options vary by country.