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We have seen many utilities software offering registry cleaners as one of the main features. But what do registry cleaners can really accomplish? some of them claim to reduce the size of the registry and remove orphaned entries to speed up Windows. Removing orphaned entries will reduce the size but when today’s hard drives have gigabytes of free space, saving a few megabytes wont change the world.


Some said it is to speedup your system, how fast can it be? The reason they can’t tell you how much faster your system will run is because the size of the registry has nothing to do with the speed at which your machine operates. The .ini files are flat text files, which require sequential searching. Registry files are database files, complete with indexing. If the index is up to date the system rebuilds it after each change so it probably makes no difference.

Other registry cleaners say they’ll remove invalid registry entries that can cause errors in other installed programs. Programs keep registry entries in their own keys and rarely reference keys written by other programs. They also include an uninstall routine that deletes the entries when you remove the program. However, the system will never reference the data that they leave behind.

Some claim that they correct problems with Windows crashes and error messages. But have you seen windows crashes and error messages caused by registry? Unless you purposely made mistakes in the registry. Some registry cleaners say they remove entries pointing to nonexisting files that are invalid and require deletion. If a registry entry points to a file that’s no longer present, of course you can delete them. However, if an entry points to something that doesn’t exist, then the system will never use it. Do you delete every unused file on your computer?