Microsoft’s Windows 10 is warning us from CCleaner, here’s why.
Windows 10 Warning: CCleaner was created and developed by Piriform. They built this as a utility used to clean invalid Windows Registry entries and unwanted files from a computer. It is actually one of the longest-established system cleaners, first launched in 2004. The software was specifically developed for Microsoft Windows only, but around 2012, a macOS version was released.
Windows 10 Warnings
If we say Potentially unwanted software, it means these are the potentially unwanted apps (or PUAs). They also refer these to the applications which an antivirus finds nothing malicious with, but which may show unwanted behaviors. This also means that PUAs are bundling extra bits and pieces, or subtly installing extras like a browser add-on, which may not do your PC any harm, but is annoying.
According to the Microsoft Defender, they have detected and named CCleaner as a PUA. They have even mentioned that “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,” they added.
Avast Extras – The other software cleaners
Microsoft indicated that Google Chrome browser, Google Toolbar, and Avast Free Antivirus plus AVG Antivirus Free are perfectly fine and not in any way malicious, but how problematic for installation. They also observe that while the CCleaner installation process provides a way to opt-out of putting these extras on your PC, the judgment is that “some users can easily inadvertently install these bundled applications.”
A CCleaner spokesperson commented on the issue, “We are in the process of engaging with Microsoft to understand why CCleaner was recently detected as PUA. We surmise the issue appears to be around bundling, and we believe we have addressed this so that our product is now no longer flagged.”