Daemon Tools used in Windows-based systems is a useful software to edit optical disc as well as to emulate or imitate disk image. The user may face error issues with the launch of Daemon Tools Lite 4.3. The problem can happen despite having the required utilities such as WinXP pro sp2, kernel debugger etc. and the reinstallation of Daemon Tools will not solve the problem. This is a bug issue and it happens if the system has an old version of Daemon Tools before the upgraded version of Windows 7 has been installed. This old version has to be uninstalled via the registry. After reboot, the new Daemon Tools version has to be installed again.