REVerdi

Now it worked!!! You changed something? I did exactly what I always do: go to the url https://www.piriform.com/ccleaner/download/portable and now worked. Thanks!!!

Windows 10 at home and Windows 7 at work. I tried to download in safe mode, but it did not work.

I also can NOT download the CCleaner portable. I've tried on different computers (one in my home and one at my work). In both, when I get to https://www.piriform.com/ccleaner/download/portable page, it is directed to https://www.piriform.com/ccleaner/download/portable/downloadfile and then to https://www.piriform.com/, and the download does NOT occur. I tried it with various browsers with zero profile and no extensions, http and https, and the result is always the same. At home I use Kaspersky and at work I use McAfee, but I can't tell if they are blocking the download.