Microsoft Defender, formerly known as Windows Defender has recently mentioned CCleaner as a “Potentially Unwanted App” after a recent update on Microsoft Defender. CCleaner is known to be one of the most popular PC optimization suites for Windows. It uses its scan checks for cached files, cookies, downloaded files and helps you optimize your computer. CCleaner also includes a comprehensive registry cleaner.
If you don’t know what “Potentially Unwanted App” means, then read this –
Potentially Unwanted App, also known as Potentially Unwanted Software is an application that may contain unwanted behavior of some kind, but the risky part is, an antivirus or you can say Microsoft Defender cannot find anything malicious in it. In this way it can build extra bits and pieces, creating annoyance to your system. Although such apps do not come under the categories of threat, malware, or viruses, it can still affect the performance of your system. Also, when you install such software, it invites more alike software to your system.
Although Microsoft Defender has flagged CCleaner as a Potentially Unwanted App at low-level risk, people can still download it and use it on their system because it is not mentioned as a threat to users or computers. It’s all up to you if you want to manually add and allow it to optimize your system, more like take a risk or let go situation. Not just CCleaner, Microsoft Defender has also mentioned other apps as Potentially Unwanted Apps. The list includes all the apps which are tagged with “Poor Reputation”.
Talking about Avast extras
According to Microsoft Defender, the CCleaner bundles app and the list includes software such as Google Toolbar, Google Chrome Browser, AVG Antivirus Free, and Avast Free Antivirus. This bundling of other software and negatively impacting the user experience, fall under the category of Potentially Unwanted Apps. It is important to note that there is nothing wrong with these bundled apps but the way you will install them could harm your system. Even if some users ignore these kinds of invitations, still there are many users existing who can probably just install these bundled applications. Be aware, you still have the option to opt-out. Microsoft has also stated that only the free version of CCleaner is detected as PUA as of now and Microsoft Defender is planning to block CCleaner.
Let’s hear CClearner’s side of story
According to the recent statement by a CCleaner spokesperson, it is believed that they have already worked on this issue around bundling and are making sure their product no longer gets flagged as “Potentially Unwanted App”. Also, they are trying to get things sorted out with Microsoft and want to understand the exact reason why CCleaner was detected as PUA in the first place.
Therefore, it may happen that you no longer be alerted to proceed while installing CCleaner if you have Microsoft Defender in your system. Also, if you believe that CCleaner can be trusted and Windows Defender has already blocked it then you can allow the app in this way –
Windows Security > Virus & Threat Protection > Threat History