Once you have Downloaded the trial Installer DISCONNECT FROM THE INTERNET
When your Internet is Turned Off, Install Ccleaner.
Start the Program
Enter Following Information when Prompted. License Key : PM3A-3VPT-3IV6-Q5KK-4U4F, Name :  Does not matter ( enter your Super secret internet Pseudonym or type in random stuff)
Block " 127.0.0.1 license.piriform.com " in your Host File.
To do so you need to find your Host file . Usually in C:\Windows\System32\drivers\etc
Run your text Edit Program of choice, in my case Notepad++ as an Admin.
Now write that "127.0.0.1 license.piriform.com" at the bottom of the file.  ( without "" )
Make sure it Saves!
Run Ccleaner
Once you are in the main Ccleaner window and it asks you to perform a Healthcheck , you can Turn on the Internet Again.