potential dangerous software

[Zatte Rita]

When i go on your website using google chrome ( latest update ) i get a warning : this type of file can harm your computer, wan't to keep ccsetup563.exe anyway ?

[nukecad]

Chrome can sometimes be over enthusiastic with that download warning.
See here for how to prevent it:
https://windowsreport.com/type-of-file-can-harm-computer/

As to why it is flagging ccsetup563.exe:

Chrome may just be flagging all '.exe' files that you try to download.

But it is partially correct; CCleaner could harm your computer - if you use it incorrectly.
So can a lot of other things if you use them incorrectly.

CCleaner has a registry cleaner included, and some other advanced tools that you need to be careful when using.

If the registry cleaner is used indiscriminately by someone who is not technically experienced, and so doesn't know what they are doing, then it can cause problems with your computer, especially with Windows 10.

We advise not to use the registry cleaner with Windows 10. (Unless you are very sure what you are doing).

So the warning is just that - It's saying that CCleaner contains some advanced tools and so you need to be careful if using some of the advanced features/tools of CCleaner.