The Windows registry is a central hierarchical database in Windows used to store information necessary to configure the system for one or more users, applications, and hardware devices. The registry contains information that is constantly referenced during operation, such as profiles for each user, the applications installed on the computer; and the types of documents each can create, property sheet settings for folders and application icons, what hardware exists on the system; and which ports are being used. Windows registry is a vital part of Windows, if it is damaged, your whole system may be corrupted and cannot be used.
The Windows registry is a database repository for information about a computer's configuration. The registry keep growing when you use Windows. As it does so, it attracts obsolete and unnecessary information, and gradually becomes cluttered and fragmented. With the growing of the registry, it can degrade the performance of the whole system and cause many weird software problems.
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