The capability to monitor registry changes proves to be quite valuable in a few individual situations:
Application programmers might have a need to track registry changes to identify which registry keys get updated as a result of some function call.
Windows might need to monitor registry changes while debugging incidents or setting up a new program.
Security engineers might have to pick apart the behavior of a specific piece of spyware or a virus to evaluate how it runs or to learn how it can be removed from a PC.
As you can tell, the capability to monitor registry changes is extremely helpful for several reasons.
The registry is one of the single most essential elements of the entire computer system. It also happens to be one of the most sensitive. Even minor modifications to any of the settings within the registry database can substantially modify the performance of applications or the entire operating system itself. It also can undermine your system's security.
"Hacking the registry", as so-called computer geeks call it, is not for computer novices. If you don't know what you are doing, it may be best for you to leave the registry alone. Even one unnoticed typo or one accidentally deleted key can immediately render your OS unusable.
The capability to track your registry database for changes also goes hand in hand with the capability to streamline the registry database if any errors happen to be found. It is recommended that you check your registry database for inefficiencies and to clean it on a regular basis.
Optimizing your computer's Windows registry is one of the least known aspects of keeping the Windows operating system in optimal condition, to keep it delivering at optimal performance. You need to take your car for a change of oil and tune ups on a regular basis, don't you? Similarly, your computing environment needs a tune up routinely, to keep it running optimally as well. Failure to do so over time can result in severe performance quality of your user experience: Your Internet experience will run slow, web pages taking a long time to display, the OS will take seemingly an eternity to boot up, the computer may ignore your request to to shut off, applications might stop responding for several minutes at a time with no rational explanation, or could even crash suddenly without advanced warning, and your browser might be rigged with pop-ups that continuously respawning no matter how often you try to do something about your operating system.
Think of the Windows registry like the DNA of your computer. Each pair of keys and values is like one of the pairs of chromosomes on the strand of DNA, that determines each and every one of the operating system's behavior. If any of the data in the registry were to be corrupted then it can destroy your entire system, in the same way that a chromosome mutation can lead to the emergence of cancer.
And, to elaborate on the DNA example for what its worth, the best "cure for cancer" of your operating system is to clean the registry through the use of software to optimize , whose function is to "neutralize" the affected registry entries by cleaning the registry, optimizing it, and repairing any broken links it contains.