Ask Rick: What is jucheck.exe? A few months ago I bought a Dell laptop a few months ago, and I frequently get a flashing shield sign towards the left of the bottom bar. When I click on it a warning message appears asking if I want to allow a program called jucheck.exe to make changes to my computer. I have spoken to several people at Dell, and no one seems to know what this program is and whether it was installed pre-delivery or not. Can you tell me what it is? Alan Rigby, by email Shame on Dell Support; it takes just ten seconds to look it up on Google. Jucheck.exe is a Java utility that periodically goes online to look for updates. The warning message is coming from Windows User Account Control (UAC), which is doing its job and asking your permission to allow the update to make changes to system files. By the way, Java is a programming language, used to display multimedia content on countless websites and also in games and applications.