On Windows, the registry is a database of information about a computer's configuration. This has information on all of a computer's hardware, including user settings and license information.When anything is installed or uninstalled from your computer, Windows updates the registry automatically.The registry is accessible through the control panel. Editing the registry can be hazardous to your computer if done improperly, so take caution. If you have little or no computer experience, you may want to stay clear of the registry.