After all, my answer to the ‘Is CCleaner safe’ question is a ‘No.’ Only use it when you are sure what you are going to do. So, you can use it but I wouldn’t recommend that you should use it. What CCleaner is able to do, can be done by you manually by using Window’s built-in utilities.

Keep in mind that it is not at all essential for your computer. But, if you are fine with them, you can surely keep using the program. I can only explain the risk you’ll have to face while using it. This post Windows 10 blocks older versions: ' CC v5.27 and older, (or somewhere around there) are no longer deemed safe by MS and automatically blocked when starting.The decision to use CCleaner is all yours. You also might want to read this article (in case you don't use an ad blocker: ignore all advertisements): Suggestion to inform yourself before installing CCleaner (or any other product) and to always, always keep your eyes wide open during installation (watch out for any bundled softwares etc etc). I, personally, would not recommend CCleaner to inexperienced and/or not so tech-savvy persons. IMO, CCleaner is not unproblematic and has to be treated carefully.

CCleaner v5.38 installing Avast Free Antivirus.

Problem with installer bundle offer? ByĪre forcing installation of Avast Antivirus By.Recently more and more threads are popping up in the Piriform/CCleaner forum which hint at even more questionable methods.

Microsoft Community has seen quite a few of related threads.

Update to the CCleaner Security IncidentĪll CCleaner versions are bundling Avast AV and/or various Google products such as Google Chrome, a Google toolbar and possibly other products.

Avast Clarifies Details Surrounding CCleaner Malware Incident.

Piriform (the maker of CCleaner etc) was bought by Avast in July 2017 and there was this nasty incident. Is it safe to install ccleaner on my pc?

Is ccleaner safe to use