The jucheck.exe process is responsible for Java Update. The process itself allows for Java to perform automatic updates on your system if you have them enabled. The process can scan for updates, download new updates, and install updates (as necessary). Some users disable auto updating or notifications from Java. It is not suggested to disable these notifications and updates as it may present a security flaw. In many cases, software applications are updated to provide users with a security patch or more stable version. Without the newest versions or security patches, the software program itself may be less secure or cause failures and crashes.