What is the Windows registry?

The registry is a centralized hierarchical database used by various versions of Windows (MS Windows 9x, CE, NT, 2000 XP and Vista) to store computer configuration information. Any changes to the following are recorded in the registry:

• User profiles, settings, options and preferences
• Software installed on the computer
• Property settings for folders and applications
• Hardware devices installed on the system
• Ports being used
• System policies
• File associations

Not only does the registry save the path and location of these items, it also retains other details which help the processor to locate applications and hardware devices quickly and efficiently, thereby reducing processing time.