radish

The problem isn't the IP. The problem is that the firewall in the TZ300 is currently finding a problem. I had a situation within the last few years where my antivirus was flagging a new version of a program I used all the time. When I ran it thru one of the online programs that verified against many different antivirus programs, a few of them found the same problem. Unfortunately, the vendor wasn't interested in finding a resolution. I hope the CCleaner developers are interested in resolving this problem with the current release, else I will wait for the next release and try again. They already know that Jotti wasn't happy.

I'm using NOD32 anti-virus & Malwarebytes Pro. I tried disabling each of them and that didn't change anything. I also didn't see anything in their individual log files that indicated that they stopped the download. I then took a closer look at the error and noticed that it says "firewall gateway anti-virus service" and I realized that this is probably coming from the Sonicwall TZ300 that also does anti-virus & firewall protection. You can take a look at the following datasheet for more info. The TZ300 sits between my Comcast broadband connection and my internal office network. https://www.sonicwall.com/SonicWall.com/files/2f/2fa6b2bd-edd9-4cc6-abe8-cebff2f90ed1.pdf Again, I've been using CCleaner for many years and never run into this type of problem. Of course I didn't have the TZ300 until the beginning of 2017, although I had the TZ100 for many years. I logged into the TZ300 and found that error when trying to download CCleaner again. It also showed it coming from: 13.33.231.93, 443, X1 I hope you can find a way to get rid of this "problem". It might be a false alert. Otherwise I will probably just wait for the next release.

I tried from the link you showed

I got the above error message when trying to download the free CCleaner 5.47.6716. I've been using CCleaner from many years and never ran into this problem. Please resolve so that I can upgrade from 5.46