free registry cleaner download Do I Need a Registry Cleaner? Occasionally, yes. Although messing with your computer’s registry is a somewhat dangerous process and you should use it in only in case of dire emergency , doing so every once in a while can indeed be useful. Using a registry cleaner will allow you to assess the state of your registry , as well as other crucial parts of your system in minutes. Whenever you start experiencing major performance issues on your computer such as the programs taking too long to respond, apps crashing, general freezing etc., it is most likely that your registry may need a hand. Furthermore, anytime you get a virus or malware you should always run a registry scan too . After those threats are removed, the major damage caused by them will be located precisely in the registry. Formatting your computer may seem a more viable solution as it eliminates all files, and consequently all the errors , leading to a fresh clean computer; however, performing such a task should only be considered a last resource . Since your system will return to a blank point, reformatting your computer can be a very exasperating process. If you don’t have a backup of your complete system and all the programs you had, you have to manually reinstall them once again. Whenever a strong virus blocks your computer, the Blue Screen of Death appears or a black screen doesn’t let the computer start at all, formatting your PC is indeed your only option. Believe it or not, the biggest menace to computers is us, ordinary users. Viruses and malware are literally everywhere, often disguised as regular- looking programs, so catching one or a couple at a time is easy. Therefore, avoid sketchy, unsecure sites as they are most likely infected will all kinds of malicious content. Download trustworthy programs only , but before doing so, make sure to search online for the name of the program, read a couple of reviews thereof and learn everything about it. These rules particularly apply to those programs designed to avert dangers, such as registry cleaners, antiviruses and more. In fact, many registry cleaners, especially free ones, intentionally carry some kind of malware so they can later target it as a critical threat. Thus you end up in a catch-22 situation: either you invest money to remove those threats or leave them on your computer, slowly killing it. Top 10 Free Registry Cleaners for Windows 10 in 2021 [Clone Disk] What is the registry? Why do I need to clean up Windows Registry? What are the best registry cleaners? You can find the answers in this article. What’s more, you will learn about how to back up computer using MiniTool Partition Wizard to avoid data loss during registry clean. Quick Navigation : What Is the Registry? The registry, or Windows Registry, is a database that is used to store low-level settings for Windows operating system and most applications like device drivers, services, and so on. It contains information, settings, options, and other necessary values for programs and hardware installed on Microsoft Windows. That is to say, Windows will refer to the registry when you are trying to open a program or change hardware. But you should know that not all the Windows applications use the registry for configurations. As a typical example, the configuration files of portable applications are usually held in their executables. The registry has two basic elements: Keys and values . The relationship between keys and values is similar to that of folders and files. The value is contained in its key, and a key may contain values and subkeys. As for the location of a key, we often reference it with a syntax that is similar to the path name in Windows. To get further information about the registry, you can check this article. Why do You Need to Clean up Registry? Every time you install a new application, new registry entries will come up in the database. And after you uninstall a program, its relevant registry will become old and useless. Although your Windows can always keep the registry up to date, it cannot clean it up automatically. So, you have to clean up registry by yourself. Generally speaking, you might want to clean up your registry for the following reasons: To improve the performance of your computer . If there are too many old entries accumulated in the registry, you might receive various error messages while operating with your computer and your device will obviously slow down. To remove potential threats from malware . If you have installed any malicious applications on your computer and then uninstalled it, there are still some remnants in the registry that may also cause some critical errors and affect your computer performance. So, you need to clean up the registry to remove all the leftover. To protect your personal information . Some data related to an uninstalled program may still be saved in the registry, such as sign-in information, associated email address, and related private data. If you don’t clean up the registry, someone who can access your device may obtain your personal information even if you’ve removed all the related files/folders. Top 10 Free Registry Cleaner for Windows 10. Theoretically, you can clean up registry manually via the Registry Editor, but it is a time-consuming and risky task. If you delete a critical entry by mistake or make any wrong changes, it is possible to cause unrecoverable damage for your computer. Therefore, to clean up registry completely, efficiently, and safely, you had better use a registry cleaner. Here, 10 free registry cleaners Windows 10 are listed. Let’s check them out, and you can choose one according to your preferences and needs. 10 Free Registry Cleaner Windows 10. Wise Registry Cleaner CCleaner Advanced SystemCare Auslogics Registry Cleaner SysTweak RegClean Pro Iolo System Mechanic SlimCleaner EasyCleaner JetClean AVG TuneUp. 1. Wise Registry Cleaner. Compatible with Windows XP/Vista/7/8/10 of both 32-bit and 64-bit, Wise Registry Cleaner is popular among users for its fast registry cleaning, automatic registry backup, scheduled cleanup, and various scan modes. It also provides the feature of System Tuneup and Registry Defrag to help you improve the computer performance. Besides, it supports scanning and cleaning registry of all users with an administrator user. This multi-user cleaning feature is not available in Free edition and you need to pay for it. It is worth mentioning that this program might attempt to install other programs during the setup. 2. CCleaner. For most common users, CCleaner is the best registry cleaner. As an all-in-one tool for PC cleaning, it allows users to clean up registry with a few clicks in seconds. It is a good choice for those who don’t know much about the PC cleanup. You can also get more advanced features in paid editions if you need. Apart from the Registry Cleaner feature, it also provides other useful utilities to help you keep your computer in good shape. It does good jobs in protecting your privacy, ensuring safe browsing, and optimizing your computer. CCleaner was hacked at the end of 2017 and many users are worried about being infected by malware. Is CCleaner safe? This is a common question among users. Actually, CCleaner has been updated and its security has been greatly improved. 3. Advanced SystemCare. Advanced SystemCare, developed by IObit, is a professional and user-friendly Windows registry cleaner. It has a technological user interface and provides multiple tools. It allows you to make a customized scan for cleaning and optimization of specific items. Besides, it can protect your online privacy, monitor your system resource in real-time, and boost computer performance effectively. Similar to CCleaner, Advanced SystemCare is also an ideal choice for beginners. 4. Auslogics Registry Cleaner. Auslogics Registry Cleaner is another professional tool that can help you clear invalid entries from the registry. It aims to limit program crashes and keep the system stable and tidy. More importantly, Auslogics highlights the registry area that requires the most attention. With the colored severity rating, you can learn about the status of the registry at a glance. It also has bundled programs, but you can decline the extra installation if you don’t need. 5. SysTweak RegClean Pro. SysTweak RegClean Pro can help to clean, repair, and optimize the Windows registry. It supports multi-user cleaning and scheduled registry cleaning, which is similar to Wise Registry Cleaner. As a reliable computer optimizer, it can also: Protect system from malware and reduce system crashes. Update necessary drivers to boost your computer speed. Allow customized scan areas. Improve gaming experience. Keep personal data safe. 6. Iolo System Mechanic. Iolo System Mechanic is an advanced PC tuneup utility which can help you defrag, compact, optimize, and back up the registry. And you can learn about the detailed problems on your computer and possible solutions from the provided personalized report. With the patented performance technology, this tool can effectively boost the startup and download speed, and improve the performance of your CPU and graphics. Besides, you can choose Quick Scan or Deep Scan mode to clean up to 50 types of junk files, including your browsing and chatting history and cache. It only supports Windows operating system. Some of its advanced features are not available in Free edition, and you need to pay for higher edition to get full functions. 7. SlimCleaner. SlimCleaner is a professional PC optimizer. It allows users to manage disk space, startup items, and installed software easily.