Paul in Houston TX said:
Instead of running via task manager, just click the CC boxes that say
"Run CC Cleaner when computer starts" and "Close program after
cleaning". However, that assumes you reboot your computer.
The problem with that scheduled task is that it can interferre with
installations. There is an option in CCleaner as to whether it will
immediately delete temp folder files or leave those that are less than
24 hours old. If CCleaner is configured to immediately delete temp
files, it may delete the temp files that some installers use to
complete an installation on reboot.
If you configure CCleaner to run on startup, be sure to *enable* its
"Only delete files in Windows Temp folders older than 24 hours"
advanced option. Of course, that also means that temp files less than
24 hours old will remain on your computer until they get older.