1.0k votes, 454 comments.potentially CCleaner is now flagged as 'PUA:Win32/CCleaner'. The article was published in, so it's very recent. CCleaner is a junk file remover, Registry cleaner, and general Windows performance optimization utility developed by Piriform. In 2017, Avast purchased Piriform, and there has been some concern. CCleaner is a freeware system optimization, privacy and cleaning tool. It removes unused files from your system allowing Windows to run faster and freeing up valuable hard disk space. It also cleans traces of your online activities such as your Internet history. Additionally it contains a fully featured registry cleaner. CCleaner v5.38 installing Avast Free Antivirus By SMalik, Thursday at 05:37; IMO, CCleaner is not unproblematic and has to be treated carefully. I, personally, would not recommend CCleaner to inexperienced and/or not so tech-savvy persons.
CCleaner is now flagged as a Potentially Unwanted Application, or PUA, by Microsoft’s Windows Defender antivirus, and its installation is thus blocked on Windows 10 devices.
While the software originally added CCleaner to its threat database with only a few details, Microsoft published an update on July 29 to explain why exactly the application is blocked by Windows Defender.
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Microsoft says CCleaner itself is not a dangerous program but its installer includes certain software, such as Google Chrome, the Google Toolbar, Avast and AVG antivirus that users may not want.
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“Certain installers for free and 14-day trial versions of CCleaner come with bundled applications, including applications that are not required by CCleaner or produced by the same publisher Piriform. While the bundled applications themselves are legitimate, bundling of software, especially products from other providers, can result in unexpected software activity that can negatively impact user experiences,” Microsoft says.
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These are all clean apps, Microsoft emphasizes, and despite the CCleaner installer offering a setting to opt out and prevent them from downloading and installing, some users might not necessarily spot these options and end up running software they didn’t ask for in the first place.
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“Some installers for the free version of CCleaner, also based on Nullsoft, include an installer for Google Chrome with the file name PF-Chrome-2019.exe. After installing Google Chrome, the installer sets the bundled application as the default web browser. Some variants of the same installer also add the Google Toolbar to Chrome as an extension,” Microsoft says.
As a result, Windows Defender just blocks CCleaner completely, as long as the installer itself comes with such software bundled by default. On the other hand, worth knowing is that not all installers are blocked, as Piriform, the Avast-owned maker of CCleaner, is also offering separate packages that come without any other programs offered to users during the installation.
MS-DEFCON 2: Patch reliability is unclear. Unless you have an immediate, pressing need to install a specific patch, don't do it. |
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Ccleaner banned from Microsoft support forum
- This topic has 5 replies, 4 voices, and was last updated 1 year, 3 months ago.
- There are reports from several sites that Microsoft has banned links to Ccleaner from its support forum, answers.microsoft.com.See Microsoft bans CCleaner from its support forums for an example and more information.
3 users thanked author for this post.
- Thanks for the “Heads Up” Joe. I do use CCleaner but avoid any registry cleaning with it. I wish MS would post their reasoning behind the ban. It would certainly be helpful.Don't take yourself so seriously, no one else does ?
4 Win 10 Pro at 1909 (3 Desktops, 1 Laptop).- The leaked email (original now deleted) apparently included;The well-known Software house boasts millions of downloads worldwide of Free and Pro tools for alleged performance maintenance of different versions of Windows, but also millions of requests for assistance in the Microsoft forums themselves due to malfunctions due to unconventional or non-aware uses.
https://www.technibble.com/forums/threads/ccleaner-com-in-microsoft-blacklist.83360/So I think Microsoft are just preventing other users from linking to CCleaner on the MS Answers Community in order to reduce future help requests by non-technical users who manage to break their operating system by using a registry cleaner.> Microsoft does not support the use of registry cleaners.
> Microsoft is not responsible for issues caused by using a registry cleaning utility.
> Microsoft cannot guarantee that problems resulting from the use of a registry cleaning utility can be solved.
Microsoft support policy for the use of registry cleaning utilities1 user thanked author for this post.
- Oh well, CCleaner used to be great for removing references to uninstalled programs.
- The report has now been retracted by the original leak site:CCleaner is not in any Microsoft Blacklist and there are no Blacklists regarding other domains in the official Microsoft forums.Publication errors have led to the dissemination of misinterpreted announcements that do not correspond to the reality of the facts .Clarifications on incorrect leaked news about the use of tools belonging to the CCleaner.com domain (translated from Italian)
2 users thanked author for this post.
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