Application Error Fix is a software that makes your computer run smoother and faster. How does Registry Cleaner achieve this? Application Error Fix achieves this by cleaning and fixing the registry. Registry is a database where Windows and programs store their data. Badly written programs don't bother to clean the Registry when you uninstall them, and some programs add unnecessary junk to the Registry. So the older your PC is, the more junked-up its Registry becomes. That's why your system gets slower and slower. Application Error Fix will safely clean and repair Windows Registry problems with a few clicks and enable you to enjoy a cleaner and faster PC.