Microsoft designates CCleaner as PUA and deletes it

CCleaner, one of the most popular applications for cleaning and optimizing systems with Windows, has been described as a potentially unwanted application, or PUA, by Microsoft.

Recall that the CCleaner application was last used to spread malware when malicious users were able to insert malware into the installer. But apparently the ban of the application did not come from this.

Microsoft explains in the threat database that CCleaner is now being detected as PUA: Win32 / CCleaner by Windows Defender Antivirus, and all application files will be automatically deleted from Windows computers. This listing for CCleaner was last updated on July 27.

Παρόλο που η Microsoft δεν δίνει περισσότερες στο γιατί η εφαρμογή έχει χαρακτηριστεί σαν PUA, δεν είναι μυστικό ότι the company is not a fan of such applications cleaning.

But let us remember a little about the course of the application:

In addition to all of the above, Microsoft somewhere explains that the use of such applications can seriously affect the stability of Windows.

“Some products, such as registry cleaners, indicate that the registry needs regular maintenance or cleaning. However, serious problems can occur if you incorrectly modify the registry using these types of utilities. These issues can cause users to reinstall the operating system due to instability. Microsoft cannot guarantee that these problems can be resolved without reinstalling the Operating System, as the extent of the changes made by these registry cleaning utilities varies from application to application.

In October 2015, a few months after the official release of Windows 10, Microsoft recommended that you do not use the CCleaner application.

Gov Maharaj, Principal Software Development Engineer at Microsoft, said users should avoid installing CCleaner on their devices without giving too many details. The Best Technology Site in Greecefgns

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Written by giorgos

George still wonders what he's doing here ...


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  1. Since the forum closed :( to write them here:
    The only "problem" in Windows is that they do not have a mechanism to control in the uninstall of programs what their respective developer chooses to leave behind in registry and files.
    A program like Iobit / Revo Unistaller is very useful.
    And the habit of doing Restore Point ourselves before each program.
    Clearing Windows Disk and emptying Prefetch and Temp is more than enough.
    And now the story that Windows delays in loading the registry so the smaller it is the faster it starts, it concerns Win 95/98 / XP and not the modern versions.
    I have not read an argument, for example, why CCleaner suggests deleting "Open with κλει" keys and presents them as "useless endings" as "unrelated". If the corresponding program does not exist, does the operating system load these keys in some magical way and delay? Or is it too late to show you a list of suggested programs for an extension that is not related to what will open? If these keys are deleted will we have a faster operating system? Did they take measurements and come to a conclusion? The same goes for the Log files he deletes. How many kb does the user save?
    If you reduce the space of the Recycle Bin you can save up to tens of GB, and I have never read this anywhere as a simple and quick solution! (proposal premiere in iguru)
    Many… technicians τύ have had the chance to "clean" everything with this program and could not read System Events to make a diagnosis.
    Now if with two clicks we can not clear our browser cache and we need 10 clicks to do it with CC, I think it is because this program was indeed useful in the past and this "reputation" has remained.

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