tkrojam

CCleaner Portable is designed to be run from a removable USB stick. < This is the key point! I copied and pasted the portable ccleaner folder to a USB drive first then I run the .exe directly and the main window can prompt! I found it created subfolders and files (e.g., ...\Data, ...\Log, ...\Setup, ...\x86, ...x64, ...\Lang and the ccleaner.ini file) inside the USB drive. I tried to copy that portable ccleaner folder back to my desktop and run the .exe directly from desktop and the main window can also prompt! I think the principle is you have to run on an external drive first for portable version in order to create necessary subfolders and files first. Finally, the issue was resolved now. Thanks a lot, lmacri. You are so helpful!

Thanks for your reply. Are you trying to run it as an Admin user or a Standard user? Admin privilege already What antivirus are you using, and if it isn't Windows Defender then what version is your AV? Default Windows Defender Have you been adding extra blocks to your firewalls or hosts file? Never You say you run it from the desktop, Have you simply extracted the files from the zip onto the desktop? Yes or have you extracted it to somewhere else and then made a shortcut on the desktop? I run the .exe instead of shortcut I assume that you are using the portable for your own reasons, but have you considered installing CCleaner? I know but I copy and paste the whole folder to another PC and run smoothly that's why I seek help here to investigate what happened on this PC

Are you running it from a USB stick? No, I run the portable .exe on desktop Where did you download CCleaner portable from? (And where did you get those old versions?) https://download.ccleaner.com/portable/ccsetup614.zip Your screenshot shows it using 24.1% of the CPU and power usage is showing as 'Very High' - which indicates that it is actively doing something , it is not just sat idle in the background. What means of something? It is normal when I run same portable version on another PC

No, I did not find its icon appeared in system tray but just running as a process in task manager.

Anyone helps?

I've just run the latest portable version of ccleaner on Windows 10 with latest Windows updates. I've started ccleaner and it seems to be running, I can see it in the Task Manager, but there is no ccleaner window displayed, so I can't actually use the program. Any ideas? I've tried the 32 bit and 64 bit versions and even many older versions.