CCleaner starts with System start (that's what I want it to do). The little Icon appears next to the Windows Clock. Sometimes on start the brush is wiping, sometimes not. But than the little Icon disappeares and I have to start CCleaner again, manually.
I tried deinstalling and reinstalling CCleaner, no difference
Sounds like you checked off the option for run at start-up. The words used in that option are confusing, it means run a clean at start-up, which is what you are seeing happen.
Thank you for answering. The option for run at start-up is checked, CCleaner starts automatically and than the Little icon in the sys tray disappears. When I start CCleaner manually, everything is fine. Strange.
It disappears because it cleans automatically, and then closes itself which is the normal operation in 'Options > Settings' for 'Run CCleaner when the computer starts'.
If you want it always running resident go into 'Options > Smart Cleaning'.