I have been using ccleaner. I tried to run the latest update and it kept failing. I uninstalled and then tried to download the free version to start fresh but it will not install. I get to the install screen and when I click install the next box is blank. I have attached screen shots. Thank you.
Some users are having issues with v5.65 that seem to be due to some antivirus programmes not recognising it yet.
Trend Micro seems to be a particular problem, and possibly McAfee.
If you are one of the affected users then for now we suggest re-installing and using a previous version, v5.64 or v5.63, which can be found under 'Older Versions' on the right of: https://filehippo.com/download_ccleaner/
Note that you will have to use the older version in Free mode.
If you register an older version then it will immediately update itself, leaving you were you were at the start.
Also I think it is a safer idea I think to download any software to your machine and then install it from there.
Just personal preference.