Okay so after some googling, quick search through forums here and there and i have yet to find a solution to why i can't get CCleaner to run at all. Installer works fine, uninstaller aswell, but for some reason when i try to run the app itself nothing happends. It doesn't appear in Task Manager, it doesn't give any errors, just plain nothing.
Running on Windows 10 Pro, 64bit with Avast free antivirus, tried disabling it, tried to run both x32 and x64 with and without admin rights, different compatibility modes and pretty much everything i could think of :/
To me this sounds as if you "may have an old version" installed, and Windows 10 if you use that OS won't allow you to use some old versions of CCleaner.
Tried straight from the default folder, both just double click CCleaner64.exe and r-click run as admin, which pops the are you sure you want to run as admin but after that nothing.
And the version is the latest i got from here, as far as i know there is no other versions installed, guess i should go throu registery manually and remove every mention of CCleaner
Nicon not much there, CCleaner and 64 executables, CCUpdate, uninst, Lang and Setup folders. Don't think i had setup folder before, thou it's empty. Also license .txt missing