Trying to install pro version

CCleaner for Windows CCleaner Windows Bug Reporting
1

I just purchased the pro version and for some reason it begins to download but won't complete the download. It has an error opening writing the executable file ccleaner64.exe. Any ideas? Thanks in advance.

2

Have a read here

https://forum.piriform.com/topic/5739-solution-when-ccleaner-wont-install-or-download-windows/