
Most often they will be correct, but not always. It will be required to make frequent guesses. A registry cleaner is following an automated procedure with no real intelligence. Even an expert would often have difficulty. Because of the nature of the registry there is usually no way to determine with complete accuracy if a specific registry entry is unneeded or in error. In principle there is nothing wrong with "cleaning" the registry, if it could be done safely. Most users of registry cleaners have limited knowledge and have only vague ideas of what the registry is. But that is not how they are typically used. Such an individual will have a solid understanding of what the registry is, how it is used, and the limitations of a registry cleaner. There is a place for registry cleaners when used by an expert to solve a specific problem.
