In CCleaner v5.45 we extended existing analytics functionality in the software in order to gain greater insight into how our users interact with the software. In a forum post, Avast addresses the unwelcome changes stating:
For free users the Privacy section offers now offers no options at all. In this update, the option has been removed. In the previous version of the software, the Options > Privacy section let uses toggle off the option marked 'Allow usage data to be shared with 3rd parties for analytics purposes'.
Step 1: Download and install the latest version of CCleaner. If this sounds like a problem for you, just follow these eleven steps to automate the process. The problem is, you have to remember to run the cleaner regularly to really benefit from it. CCleaner is a tool for Windows that can remove clutter from your PC, such as temporary Internet files and cookies. If you've never used CCleaner or a similar tool before, then chances are your computer is running slowly, displays errors every so often, and has much less free space than you'd expect (for those of you who just got your computers recently, that's cheating).