Do I Need a Registry Cleaner?
"My computer seems to get slower and slower. A friend told me I need a registry cleaner. Will that really help? If so, where can I get a good free registry cleaner to do the job?"

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Cleaning the Registry
The short answer is: Yes, your computer will run better if you occasionally clean your Windows system registry. But first, let's define exactly what the registry is...
In layman's terms, the Windows Registry is a hideously complex ball of string, rubber bands, duct tape and bailing wire that's supposed to keep track of Windows system settings, your hardware configuration, user preferences, file associations, system policies, and installed software. In slightly more technical terms, the registry is a database in which Windows keeps track of relationships between hardware, software and the operating system.
It was supposed to be an improvement on the collection of simple text-based INI files that stored Windows configuration settings, but too many pocket protectors got involved in the design and the result was an over-engineered, over-complicated mess that makes Windows much more fragile and harder for users to maintain. Since it is a single point of failure, problems with the Registry can make a Windows system slower, less reliable, unbootable, and in extreme cases can only be fixed by reinstalling the operating system.
That's why you need to use a registry cleaner every once in a while.Oh, That Waxy Buildup!
It's not uncommon for the registry to grow very large over time, which tends to slow down the computer's startup and can make it unstable. You can end up with lots of unnecessary registry entries that are created when you install or remove software and hardware on your computer. Sometimes an "orphaned" registry entry can confuse Windows during startup and cause a delay. In general, slimming down your registry will make Windows run faster.
The REGEDIT command will allow you to view and edit the registry, but if you don't know what you're doing under the hood, just put down that wrench and back away slowly. You can do a lot of damage to your system by flailing about with a registry editor. Specialized programs exist to examine the registry, compare what's in there to what's really on your system, and either correct or delete erroneous entries.
REGCLEAN is a utility program included in Windows 95 and Windows 98. This program is no longer officially supported by Microsoft, but some users report that it works fine on Windows XP systems. However, I don't recommend that it be used on XP, because the structure of the registry is different in XP than it was in earlier incarnations of Windows.
RegSeeker is a highly rated (and free) registry cleaner that I like. RegSeeker is an aggressive cleaner, and in some cases may delete registry entries that are needed. Some RegSeeker users have reported that using a RegSeeker exclusion file can prevent it from making erroneous deletions.
Another popular free registry fixer/cleaner is CCleaner, which does some additional things like cleaning up your browser's temp files and deleting unneeded files. CCleaner has a reputation for being less aggressive so may be a better choice for non-expert users who want a free registry cleaner.
Uniblue RegistryBooster is not free (US$29), but seems to be the most advanced tool in the class. Some 3rd-party tests have shown that it improves both boot time and application launch time. In the past, I've read about people with problems uninstalling the Uniblue Registry Booster software after downloading a trial version. To my knowledge, the company has resolved those problems. If you are a non-techie, I'd recommend this tool over the others.
There other registry cleaners available, some free and some not. If you want to play the field, read some reviews by reputable sources like CNET or PCWorld before you install. If you're not careful, you can get an adware or virus-laden registry cleaner wannabe that claims to do the job, but will have nasty side effects. See my companion article Free Registry Cleaners for some others that have earned good reputations.
A Few Caveats...
Before using any registry cleaner, I highly recommend that you create a System Restore restore point, and even better, do a full registry backup with the ERUNT utility. In some cases, aggressive registry cleaning can remove entries required for some programs to operate.
I should mention that technology experts have differing opinions on the value of registry cleaners. Some adamantly claim that they cannot possibly improve system performance. Others say they might help a little, but point out that in some cases they can cause damage as well. And of course others believe they can offer significant benefits. I tend to be in the latter camp, but recommend caution when using a registry cleaner. Choose the tool that suits your level of technical expertise, and do your preparatory backups.
Making Windows Faster
I should also mention that there are lots of other things that can cause your computer to bog down. Viruses, spyware, a hard drive that needs defragmenting, and other factors can contribute to the problem. In my article Make Windows XP Run Faster! I share my special recipe to clean the icky goo out of your computer's pipes, so Windows will start quicker, run more reliably, and go faster on the info-superhighway.
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Posted by Bob Rankin on May 29, 2008 05:18 PM
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Article information: AskBobRankin -- Do I Need a Registry Cleaner? (Posted: May 29, 2008 05:18 PM)
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Copyright © 2005 - Bob Rankin - All Rights Reserved





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Most recent comments on "Do I Need a Registry Cleaner?"
(See all 25 comments for this article.)Posted by:
JJHarte
03 Oct 2008
A short note on PC Speeds;I work in a Multimedia store and the biggest problem I see and hear with PC speeds is that people buy additional hardware and load the full suite of software for a given product and have it all come on at start-up. This happens because people just click through the software/driver load without selecting the custom option.Reducing the number of applications launching at start-up and running regular diskclean/defrag can make a PC significantly faster and more stable. Similarly,default settings on Internet Explorer and Firefox can cause huge amounts of useless data to be stored for months on end.Reducing these settings will cut down on storage of unnecessary data without having a negative impact on browser performance. I would as a rule, be very wary of 'free' software particularly when it does a 3-second sweep of your PC and finds 75 faults which only it can fix. Remember,there's no such thing as a free lunch!
Posted by:
Bob Bowen
07 Nov 2008
Thanks for the instructive articles, Bob. A word about RegSeeker: I have used it for many years, and as a registry cleaner it is downright dangerous, if you don't know what you are doing. But, it has an outstanding search facility ("Find in Registry.." opens it) It is excellent for getting rid of leftovers after an uninstall. Just type in the name of the program uninstalled, and RegSeeker will find all the left-overs, which can then be deleted. All deleted items will be backup on RegSeeker and later also deleted. I find Registry First Aid the best registry cleaner and some good free ones are: Glary Utilities, Eusing Free Registry Cleaner, Wise Registry Cleaner and Comodo Registry Cleaner. Bye now, I've still got a lot to read on your excellent site! Thank you.
Posted by:
thehummer24
05 Dec 2008
great article and very important . like most of the user i had a registry problem recntly got some errors and my computer was very slow. i wish i reed this article before but i didnt.
i struggle with few annoying errors and special with "error (login):0x10e0"
i searched the net alot and bought few soft till i found the right one which fixd my registry and solved the errors i had.
hope you wont need it but just in case
Posted by:
Joe
23 Dec 2008
IMO, ccleaner is phenomenal at cleaning out (what else) crap in the form of temp files (possible to recover hundreds of megabytes or even a gig or two) and does indirectly help speed the boot process. Indirectly by getting you to clean out startup entries you don't need, not by actually removing invalid entries (note to editor - invalid paths don't slow down the system if the path isn't searched and orphaned paths won't likely be searched by something that doesn't exist).
A friend called me with an issue whereby she couldn't burn a DVD of a wedding she made (and was paid to do) and could I suggest anything. Not knowing the app or seeing the machine, I suggested ccleaner. She was ecstatic that it fixed her problem.
Cleaning your PC should be a three-step process:
1. Uninstall/remove all those cute little programs you downloaded to try and never use.
2. Remove all unnecessary files: temp files, more than 25mb of temp browser files and hotfix uninstall files you'll never uninstall (this will speed up your virus scans immeasurably).
3. Disable all unnecessary startup apps and services (bet 20% of those that load are unnecessary). This will also free up memory which will make your apps run faster.
Sorry, long winded, but I think it's worth printing.
Posted by:
Laryssa
09 Jan 2009
Well I totally "cleaned" it with regclean! Overzealously, I must have cleaned out everything, save for connecting to IE. My operating system on that computer was/is Windows ME and regclean was my final attempt to improve performance before upgrading to XP and then to Vista. Now I get messages that I do not have the authority to open any program, including reading an install disc. Is there anything I can do to salvage that computer? (Please, please say yes!)
EDITOR'S NOTE: Yes! You can restore the registry backup that you made before using REGCLEAN. What, you forgot to make a backup? Then you can use System Restore to roll back the changes.
Posted by:
Darryl
20 Jan 2009
I have added a program called System Security by mistake. Now it is on my computer and continues to send messages. It isnt located in add/remove programs. But its running somewhere on the computer. Is there anything I can do to remove or disable this?
EDITOR'S NOTE: You need a good anti-virus program to nuke it. See http://askbobrankin.com/should_i_buy_antispyware_or_antivirus_software.html
Posted by:
Jason
13 May 2009
RegFix is really nice, it works perfect (for me, anyway)
The only problem with it is that its not free, but I was planning on hiring some geek to speed up my old computer - glad I didn't.
http://tinyurl.com/pbvszv
Posted by:
Jerry
26 Aug 2009
Hi,
Here is some video called "Registry Cleaners - Avoid Scams"
http://www.youtube.com/watch?v=DtdvY2jIDFY
Posted by:
Billy
13 Oct 2009
I use internet cafes and store my data on a thumb drive. I live in a remote part of the Dominican Republic without internet service. A exe file called ´data administrator´was automatically attached to the thumb drive and written to the hard drive of my home computer. After many attempts I was finally able to rid the thumb drive of it but not my home computer. I have tried registry cleaners but I get a ¨registry access denied¨message. When registry cleaner programs are used the program shuts down and restarts the computer.
EDITOR'S NOTE: The "data administrator.exe" is almost certainly malware. See my list of free malware removers here: http://askbobrankin.com/should_i_buy_antispyware_or_antivirus_software.html
Posted by:
Fabrizio Balsaque
28 Oct 2009
I also downloaded malware to my computer. When I locatd the program in my add/remove, it would not uninstall. i installed hijack this and killed it.
Be careful with hijack this it is very powerful. Research the filed/program that you are going to kill before you lay it too waste. Then give to her good.