However, this should provide a high level overview of how it works. Though there’s no performance benefit to cleaning your registry, there isn’t any harm in doing it, either. Reputable PC cleaning tools, such as CCleaner and Iolo System Mechanic, are excellent at avoiding critical keys.

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Essentially, a registry cleaner is a tool that scans your Windows registry for registry keys that are of no use, or potentially leftover remnants of malware that has been removed. It then gives you the option of removing this dead weight in your system. Vendors of registry cleaning claim that by cleaning up the Windows registry, you have an opportunity to speed up your computer.

This is the first of a two-part series on the Windows Registry. Today I’ll walk you through what it is and how it works. Wednesday I’ll walk you through saving a copy, accessing it and modifying it safely. The Windows registry is a huge subject and one we aren’t going to be able to cover in two blog posts.

Or at least this is what Piriform wants us to believe. I’m not going to lie to you, there was a time that I thought Piriform’s CCLeaner was a useful free registry cleaner to keep junk off my machine, with the false hope of a little performance boost. There are registry entries for every aspect of your computer.

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It tells Windows how to handle different hardware and software and configures the preferences you have set for each. Usually we suggest leaving things like the Windows registry alone unless you know what you’re doing. There is a lot that can go wrong if you change the wrong thing or accidentally delete an entry you didn’t mean to. However, you have to strike the balance between leaving well enough alone and exploring a little to learn new things.

Greg is an avid writer on everything IT related, from cyber security to troubleshooting. Windows is designed to deal with the registry and any potential registry errors. If Microsoft felt that cleaning the registry would help your computer, they probably would have built it into Windows by now. They haven’t because the registry doesn’t need to be cleaned, despite what others may have told you. Registry keys do not take up enough space for us to even notice them nowadays.

I actually have doubts about whether or not there was a computer performance boost from cleaning your registry 10 years ago. Registry cleaners came to prominence over 10 years ago when computer performance was nowhere near as fast as it is today.

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• The following descriptions have been revised to reflect this https://wikidll.com/trolltech behavior.
• You can disable Windows Hello for Business when you configure Windows enrollment, or as part of a device configuration profile for identity protection.
• The reversal of settings will be fixed in a future update to this security baseline.
• Browser/AllowSmartScreen – Microsoft Edge uses Microsoft Defender SmartScreen to protect users from potential phishing scams and malicious software by default.
• You cannot disable Windows Hello for Business through this baseline.
• At the time Kaspersky claimed that Microsoft was "fiercely" promoting its own Windows Defender anti-virus, at the expense of competitors’ security software.

Greg is a technologist and data geek with over 10 years in tech. He has worked in a variety of industries as an IT manager and software tester.