CCleaner Identified as PUA

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  1. Posts : 1,026
    Win10 Version 21H2 19044.1645
       #1

    CCleaner Identified as PUA


    Windows Defender identified CCleaner (current version) as PUA during a full scan today.

    Thoughts ?
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  2. Posts : 6,856
    22H2 64 Bit Pro
       #2

    Maybe you're getting the regular version which has included PUP's in the past.

    I always update manually and get the slim build. (No bundled extras)
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  4. Posts : 1,026
    Win10 Version 21H2 19044.1645
    Thread Starter
       #4

    Very helpful info, thanks ! (must spread msg)

    Will give Slim a try.
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  5. Posts : 31,682
    10 Home x64 (22H2) (10 Pro on 2nd pc)
       #5

    pericles said:
    Very helpful info, thanks ! (must spread msg)

    Will give Slim a try.

    Slim is good (ie. 'clean') but I prefer Portable. It's identical to Slim in all respects except it needs no install, just extract its .zip to a folder. Its settings are kept in a .ini file instead of in the Registry.
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  6. Posts : 170
    windows 10 Pro
       #6

    Is it safe to run the registry scan and then clean? my scan came up with an awful lot of things to clean.
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  7. Posts : 7,909
    Windows 11 Pro 64 bit
       #7

    This is a common issue which I avoid by using the portable version https://www.ccleaner.com/ccleaner/builds

    I also use the portable version of MiniTool Partition Wizard for the same reason.
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  8. Posts : 1,026
    Win10 Version 21H2 19044.1645
    Thread Starter
       #8

    p5200 said:
    Is it safe to run the registry scan and then clean? my scan came up with an awful lot of things to clean.
    I have ran it for years (all items checked) without issue. I have seen debate over whether it is actually needed.







    C
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  9. Posts : 56,831
    Multi-boot Windows 10/11 - RTM, RP, Beta, and Insider
       #9

    p5200 said:
    Is it safe to run the registry scan and then clean? my scan came up with an awful lot of things to clean.
    Registry scan of CCleaner isn't going to do anything for you, honestly. In fact, if Fonts is included, you can cause a world of hurt that will take you days to track down. Yes, it offers to backup the .reg entries, but by the time you've figured out CCleaner may be the culprit, those .reg entries would cause more harm if you were to reinstate them.

    Betcha a lot of your "awful lot of things to clean" were .net entries. Harmless.

    Use CCleaner smartly for files/folders and leave the registry alone.
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  10. Posts : 1,026
    Win10 Version 21H2 19044.1645
    Thread Starter
       #10

    Softpedia article from today. Proprietary war ?

    Should note I installed Slim and scans revealed no PUA. Thanks for the tips on Portable - will try.


    CCleaner, one of the most popular cleaning and system optimizations app for Windows, is now detected as a potentially unwanted application, or PUA, by Microsoft’s antivirus engine.

    While CCleaner has previously been used to spread malware after hackers managed to inject malware into its installer, this doesn’t seem to be the reason for Microsoft flagging the latest version of the app as PUA.

    Microsoft explains in its threat database that CCleaner is now detected as PUA:Win32/CCleaner by the Windows Defender Antivirus, with all files automatically removed from Windows computers. The CCleaner listing was last updated on July 27.

    While Microsoft hasn’t provided any information as to why the app is now flagged as a PUA, it’s not a secret that the software giant itself isn’t a big fan of such cleaning apps.

    In a support document, the company explains that turning to such apps can eventually affect the stability of Windows.

    “Some products such as registry cleaning utilities suggest that the registry needs regular maintenance or cleaning. However, serious issues can occur when you modify the registry incorrectly using these types of utilities. These issues might require users to reinstall the operating system due to instability. Microsoft cannot guarantee that these problems can be solved without a reinstallation of the Operating System as the extent of the changes made by registry cleaning utilities varies from application to application,” it says.

    Microsoft recommends against using CCleaner
    Back in October 2015, only a few months after officially launching Windows 10, Microsoft recommended against using CCleaner.

    Gov Maharaj, Principal Software Development Engineer at Microsoft, explained that users should rather avoid installing CCleaner on their devices, all without providing too many specifics on the actual reason.

    “CCleaner is… how do I put it mildly… Don’t… let’s just move on!” he said.

    We’ve reached out to Microsoft for more information on the CCleaner listing and will update the article when and if we hear back.


    https://news.softpedia.com/news/micr...s-530675.shtml[/I]
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